20836261156 has 24 divisors (see below), whose sum is σ = 39706128000. Its totient is φ = 9529468704.

The previous prime is 20836261097. The next prime is 20836261163. The reversal of 20836261156 is 65116263802.

It is a super-2 number, since 2×20836261156² (a number of 21 digits) contains 22 as substring.

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, 4724716 + ... + 4729123.

It is an arithmetic number, because the mean of its divisors is an integer number (1654422000).

Almost surely, 2^20836261156 is an apocalyptic number.

It is an amenable number.

20836261156 is a deficient number, since it is larger than the sum of its proper divisors (18869866844).

20836261156 is a wasteful number, since it uses less digits than its factorization.

20836261156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9453891 (or 9453889 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 20836261156 in words is "twenty billion, eight hundred thirty-six million, two hundred sixty-one thousand, one hundred fifty-six".