20057064231677 has 4 divisors (see below), whose sum is σ = 21880433707296. Its totient is φ = 18233694756060.

The previous prime is 20057064231661. The next prime is 20057064231719. The reversal of 20057064231677 is 77613246075002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20057064231677 - 2⁴ = 20057064231661 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 (20057064231647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911684737793 + ... + 911684737814.

It is an arithmetic number, because the mean of its divisors is an integer number (5470108426824).

Almost surely, 2^{20057064231677} is an apocalyptic number.

It is an amenable number.

20057064231677 is a deficient number, since it is larger than the sum of its proper divisors (1823369475619).

20057064231677 is a wasteful number, since it uses less digits than its factorization.

20057064231677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823369475618.

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 20057064231677 in words is "twenty trillion, fifty-seven billion, sixty-four million, two hundred thirty-one thousand, six hundred seventy-seven".