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12903144577 = 47691397301
BaseRepresentation
bin11000000010001011…
…00101110010000001
31020022020112122210121
430001011211302001
5202411201111302
65532211100241
7634515630211
oct140105456201
936266478717
1012903144577
115521541554
1226012a1681
1312a82bc5bb
148a5956241
15507bbde37
hex301165c81

12903144577 has 8 divisors (see below), whose sum is σ = 13196783232. Its totient is φ = 12610302000.

The previous prime is 12903144571. The next prime is 12903144581. The reversal of 12903144577 is 77544130921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12903144577 is a prime.

It is a super-2 number, since 2×129031445772 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12903144571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166174 + ... + 231127.

It is an arithmetic number, because the mean of its divisors is an integer number (1649597904).

Almost surely, 212903144577 is an apocalyptic number.

It is an amenable number.

12903144577 is a deficient number, since it is larger than the sum of its proper divisors (293638655).

12903144577 is an equidigital number, since it uses as much as digits as its factorization.

12903144577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398039.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 12903144577 in words is "twelve billion, nine hundred three million, one hundred forty-four thousand, five hundred seventy-seven".

Divisors: 1 47 691 32477 397301 18673147 274534991 12903144577