20013657640574 has 16 divisors (see below), whose sum is σ = 33081609411312. Its totient is φ = 9022257111168.

The previous prime is 20013657640547. The next prime is 20013657640589. The reversal of 20013657640574 is 47504675631002.

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, 8950650779 + ... + 8950653014.

It is an arithmetic number, because the mean of its divisors is an integer number (2067600588207).

Almost surely, 2^{20013657640574} is an apocalyptic number.

20013657640574 is a deficient number, since it is larger than the sum of its proper divisors (13067951770738).

20013657640574 is a wasteful number, since it uses less digits than its factorization.

20013657640574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17901303851.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 20013657640574 in words is "twenty trillion, thirteen billion, six hundred fifty-seven million, six hundred forty thousand, five hundred seventy-four".