20513130425553 has 8 divisors (see below), whose sum is σ = 27351191850400. Its totient is φ = 13675244642208.

The previous prime is 20513130425549. The next prime is 20513130425573. The reversal of 20513130425553 is 35552403131502.

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

It is not a de Polignac number, because 20513130425553 - 2² = 20513130425549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20513130425533) 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, 43637623 + ... + 44105196.

It is an arithmetic number, because the mean of its divisors is an integer number (3418898981300).

Almost surely, 2^{20513130425553} is an apocalyptic number.

It is an amenable number.

20513130425553 is a deficient number, since it is larger than the sum of its proper divisors (6838061424847).

20513130425553 is an equidigital number, since it uses as much as digits as its factorization.

20513130425553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87820751.

The product of its (nonzero) digits is 270000, while the sum is 39.

The spelling of 20513130425553 in words is "twenty trillion, five hundred thirteen billion, one hundred thirty million, four hundred twenty-five thousand, five hundred fifty-three".