20513257351300 has 72 divisors (see below), whose sum is σ = 50873750607680. Its totient is φ = 7032996201600.

The previous prime is 20513257351291. The next prime is 20513257351303. The reversal of 20513257351300 is 315375231502.

It is a super-2 number, since 2×20513257351300² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20513257351300.

It is not an unprimeable number, because it can be changed into a prime (20513257351303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46919710 + ... + 47354890.

Almost surely, 2^{20513257351300} is an apocalyptic number.

20513257351300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20513257351300 is an abundant number, since it is smaller than the sum of its proper divisors (30360493256380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20513257351300 is a wasteful number, since it uses less digits than its factorization.

20513257351300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502541 (or 502534 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 37.

The spelling of 20513257351300 in words is "twenty trillion, five hundred thirteen billion, two hundred fifty-seven million, three hundred fifty-one thousand, three hundred".