20056634535520 has 96 divisors (see below), whose sum is σ = 51693588840096. Its totient is φ = 7293015244800.

The previous prime is 20056634535493. The next prime is 20056634535527. The reversal of 20056634535520 is 2553543665002.

It is a super-2 number, since 2×20056634535520² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20056634535527) 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, 43986142 + ... + 44439778.

It is an arithmetic number, because the mean of its divisors is an integer number (538474883751).

Almost surely, 2^{20056634535520} is an apocalyptic number.

20056634535520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20056634535520 is an abundant number, since it is smaller than the sum of its proper divisors (31636954304576).

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

20056634535520 is a wasteful number, since it uses less digits than its factorization.

20056634535520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478784 (or 478776 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 46.

The spelling of 20056634535520 in words is "twenty trillion, fifty-six billion, six hundred thirty-four million, five hundred thirty-five thousand, five hundred twenty".