20925936966 has 32 divisors (see below), whose sum is σ = 45777110400. Its totient is φ = 6324454080.

The previous prime is 20925936937. The next prime is 20925937013. The reversal of 20925936966 is 66963952902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393271 + ... + 443298.

It is an arithmetic number, because the mean of its divisors is an integer number (1430534700).

Almost surely, 2^20925936966 is an apocalyptic number.

20925936966 is an abundant number, since it is smaller than the sum of its proper divisors (24851173434).

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

20925936966 is a wasteful number, since it uses less digits than its factorization.

20925936966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836964.

The product of its (nonzero) digits is 9447840, while the sum is 57.

The spelling of 20925936966 in words is "twenty billion, nine hundred twenty-five million, nine hundred thirty-six thousand, nine hundred sixty-six".