20125463712761 has 32 divisors (see below), whose sum is σ = 23575202150400. Its totient is φ = 16976209465600.

The previous prime is 20125463712721. The next prime is 20125463712779. The reversal of 20125463712761 is 16721736452102.

It is not a de Polignac number, because 20125463712761 - 2²² = 20125459518457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20125463712721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387755390 + ... + 387807288.

It is an arithmetic number, because the mean of its divisors is an integer number (736725067200).

Almost surely, 2^{20125463712761} is an apocalyptic number.

It is an amenable number.

20125463712761 is a deficient number, since it is larger than the sum of its proper divisors (3449738437639).

20125463712761 is a wasteful number, since it uses less digits than its factorization.

20125463712761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81205.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 20125463712761 in words is "twenty trillion, one hundred twenty-five billion, four hundred sixty-three million, seven hundred twelve thousand, seven hundred sixty-one".