10521317439 has 12 divisors (see below), whose sum is σ = 15345008016. Its totient is φ = 6946111872.

The previous prime is 10521317371. The next prime is 10521317483. The reversal of 10521317439 is 93471312501.

10521317439 is a `hidden beast` number, since 1 + 0 + 5 + 213 + 1 + 7 + 439 = 666.

It is not a de Polignac number, because 10521317439 - 2¹⁵ = 10521284671 is a prime.

It is a super-2 number, since 2×10521317439² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521317489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5674002 + ... + 5675855.

It is an arithmetic number, because the mean of its divisors is an integer number (1278750668).

Almost surely, 2^10521317439 is an apocalyptic number.

10521317439 is a deficient number, since it is larger than the sum of its proper divisors (4823690577).

10521317439 is a wasteful number, since it uses less digits than its factorization.

10521317439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11349966 (or 11349963 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 10521317439 in words is "ten billion, five hundred twenty-one million, three hundred seventeen thousand, four hundred thirty-nine".