20955761621074 has 16 divisors (see below), whose sum is σ = 35988658596288. Its totient is φ = 8964916740432.

The previous prime is 20955761621029. The next prime is 20955761621117. The reversal of 20955761621074 is 47012616755902.

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, 1343654784 + ... + 1343670379.

It is an arithmetic number, because the mean of its divisors is an integer number (2249291162268).

Almost surely, 2^{20955761621074} is an apocalyptic number.

20955761621074 is a deficient number, since it is larger than the sum of its proper divisors (15032896975214).

20955761621074 is a wasteful number, since it uses less digits than its factorization.

20955761621074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687325729.

The product of its (nonzero) digits is 6350400, while the sum is 55.

The spelling of 20955761621074 in words is "twenty trillion, nine hundred fifty-five billion, seven hundred sixty-one million, six hundred twenty-one thousand, seventy-four".