20005746271264 has 96 divisors (see below), whose sum is σ = 44913059210880. Its totient is φ = 8689897869312.

The previous prime is 20005746271249. The next prime is 20005746271331. The reversal of 20005746271264 is 46217264750002.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 212954607 + ... + 213048529.

It is an arithmetic number, because the mean of its divisors is an integer number (467844366780).

Almost surely, 2^{20005746271264} is an apocalyptic number.

It is an amenable number.

20005746271264 is an abundant number, since it is smaller than the sum of its proper divisors (24907312939616).

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

20005746271264 is a wasteful number, since it uses less digits than its factorization.

20005746271264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124082 (or 124074 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 20005746271264 in words is "twenty trillion, five billion, seven hundred forty-six million, two hundred seventy-one thousand, two hundred sixty-four".