20636098956 has 36 divisors (see below), whose sum is σ = 56905607304. Its totient is φ = 6253363200.

The previous prime is 20636098933. The next prime is 20636098961. The reversal of 20636098956 is 65989063602.

20636098956 is a `hidden beast` number, since 20 + 6 + 3 + 609 + 8 + 9 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26055285 + ... + 26056076.

It is an arithmetic number, because the mean of its divisors is an integer number (1580711314).

Almost surely, 2^20636098956 is an apocalyptic number.

It is an amenable number.

20636098956 is an abundant number, since it is smaller than the sum of its proper divisors (36269508348).

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

20636098956 is a wasteful number, since it uses less digits than its factorization.

20636098956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52111382 (or 52111377 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 20636098956 in words is "twenty billion, six hundred thirty-six million, ninety-eight thousand, nine hundred fifty-six".