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53662053361 = 77666007623
BaseRepresentation
bin110001111110100000…
…011111001111110001
312010111210121202102211
4301332200133033301
51334344441201421
640352500012121
73606536633110
oct617640371761
9163453552384
1053662053361
1120837914a34
12a497391041
1350a26685c7
142850c33c77
1515e11129e1
hexc7e81f3f1

53662053361 has 4 divisors (see below), whose sum is σ = 61328060992. Its totient is φ = 45996045732.

The previous prime is 53662053353. The next prime is 53662053371. The reversal of 53662053361 is 16335026635.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53662053361 - 23 = 53662053353 is a prime.

It is a super-2 number, since 2×536620533612 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53662053301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3833003805 + ... + 3833003818.

It is an arithmetic number, because the mean of its divisors is an integer number (15332015248).

Almost surely, 253662053361 is an apocalyptic number.

It is an amenable number.

53662053361 is a deficient number, since it is larger than the sum of its proper divisors (7666007631).

53662053361 is an equidigital number, since it uses as much as digits as its factorization.

53662053361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7666007630.

The product of its (nonzero) digits is 291600, while the sum is 40.

Adding to 53662053361 its reverse (16335026635), we get a palindrome (69997079996).

The spelling of 53662053361 in words is "fifty-three billion, six hundred sixty-two million, fifty-three thousand, three hundred sixty-one".

Divisors: 1 7 7666007623 53662053361