20175610396956 has 24 divisors (see below), whose sum is σ = 53801627725440. Its totient is φ = 5764460113392.

The previous prime is 20175610396951. The next prime is 20175610396973. The reversal of 20175610396956 is 65969301657102.

It is a self number, because there is not a number n which added to its sum of digits gives 20175610396956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20175610396951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120092918946 + ... + 120092919113.

It is an arithmetic number, because the mean of its divisors is an integer number (2241734488560).

Almost surely, 2^{20175610396956} is an apocalyptic number.

It is an amenable number.

20175610396956 is an abundant number, since it is smaller than the sum of its proper divisors (33626017328484).

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

20175610396956 is a wasteful number, since it uses less digits than its factorization.

20175610396956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240185838073 (or 240185838071 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 60.

The spelling of 20175610396956 in words is "twenty trillion, one hundred seventy-five billion, six hundred ten million, three hundred ninety-six thousand, nine hundred fifty-six".