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6411053621 = 72166778487
BaseRepresentation
bin1011111100010000…
…01110101000110101
3121112210112021020102
411332020032220311
5101112212203441
62540055043445
7314605025300
oct57610165065
917483467212
106411053621
11279a966525
1212ab070585
137b22aa66b
1444b64db37
15277c8169b
hex17e20ea35

6411053621 has 12 divisors (see below), whose sum is σ = 7462325088. Its totient is φ = 5491822392.

The previous prime is 6411053609. The next prime is 6411053633. The reversal of 6411053621 is 1263501146.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6411053609) and next prime (6411053633).

It is not a de Polignac number, because 6411053621 - 222 = 6406859317 is a prime.

It is a super-2 number, since 2×64110536212 = 82203217062674423282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6411053021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42440 + ... + 120926.

It is an arithmetic number, because the mean of its divisors is an integer number (621860424).

Almost surely, 26411053621 is an apocalyptic number.

It is an amenable number.

6411053621 is a deficient number, since it is larger than the sum of its proper divisors (1051271467).

6411053621 is a wasteful number, since it uses less digits than its factorization.

6411053621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80168 (or 80161 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 6411053621 is about 80069.0553272611. The cubic root of 6411053621 is about 1857.7038012484.

Adding to 6411053621 its reverse (1263501146), we get a palindrome (7674554767).

The spelling of 6411053621 in words is "six billion, four hundred eleven million, fifty-three thousand, six hundred twenty-one".

Divisors: 1 7 49 1667 11669 78487 81683 549409 3845863 130837829 915864803 6411053621