10020565056557 has 16 divisors (see below), whose sum is σ = 11054618856000. Its totient is φ = 9007031763840.

The previous prime is 10020565056553. The next prime is 10020565056571. The reversal of 10020565056557 is 75565056502001.

It is not a de Polignac number, because 10020565056557 - 2² = 10020565056553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020565056553) 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, 51316694 + ... + 51511592.

It is an arithmetic number, because the mean of its divisors is an integer number (690913678500).

Almost surely, 2^{10020565056557} is an apocalyptic number.

It is an amenable number.

10020565056557 is a deficient number, since it is larger than the sum of its proper divisors (1034053799443).

10020565056557 is a wasteful number, since it uses less digits than its factorization.

10020565056557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247516.

The product of its (nonzero) digits is 1575000, while the sum is 47.

The spelling of 10020565056557 in words is "ten trillion, twenty billion, five hundred sixty-five million, fifty-six thousand, five hundred fifty-seven".