20013056351616 has 64 divisors (see below), whose sum is σ = 53166386735280. Its totient is φ = 6670177271808.

The previous prime is 20013056351597. The next prime is 20013056351621. The reversal of 20013056351616 is 61615365031002.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×20013056351616² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235381 + ... + 6330996.

Almost surely, 2^{20013056351616} is an apocalyptic number.

It is an amenable number.

20013056351616 is an abundant number, since it is smaller than the sum of its proper divisors (33153330383664).

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

20013056351616 is an equidigital number, since it uses as much as digits as its factorization.

20013056351616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6574331 (or 6574319 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The spelling of 20013056351616 in words is "twenty trillion, thirteen billion, fifty-six million, three hundred fifty-one thousand, six hundred sixteen".