10204551521 has 16 divisors (see below), whose sum is σ = 10904284800. Its totient is φ = 9521463168.

The previous prime is 10204551517. The next prime is 10204551547. The reversal of 10204551521 is 12515540201.

It is a cyclic number.

It is not a de Polignac number, because 10204551521 - 2² = 10204551517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10204551221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1045100 + ... + 1054818.

It is an arithmetic number, because the mean of its divisors is an integer number (681517800).

Almost surely, 2^10204551521 is an apocalyptic number.

It is an amenable number.

10204551521 is a deficient number, since it is larger than the sum of its proper divisors (699733279).

10204551521 is an equidigital number, since it uses as much as digits as its factorization.

10204551521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10568.

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 10204551521 in words is "ten billion, two hundred four million, five hundred fifty-one thousand, five hundred twenty-one".