10002513521 has 48 divisors (see below), whose sum is σ = 13808592000. Its totient is φ = 7194227040.

The previous prime is 10002513473. The next prime is 10002513541. The reversal of 10002513521 is 12531520001.

It is a happy number.

It is not a de Polignac number, because 10002513521 - 2²² = 9998319217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10002513493 and 10002513502.

It is not an unprimeable number, because it can be changed into a prime (10002513541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 530270 + ... + 548808.

It is an arithmetic number, because the mean of its divisors is an integer number (287679000).

Almost surely, 2^10002513521 is an apocalyptic number.

10002513521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10002513521 is a deficient number, since it is larger than the sum of its proper divisors (3806078479).

10002513521 is a wasteful number, since it uses less digits than its factorization.

10002513521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18595 (or 18570 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The spelling of 10002513521 in words is "ten billion, two million, five hundred thirteen thousand, five hundred twenty-one".