20936154886 has 16 divisors (see below), whose sum is σ = 31640645088. Its totient is φ = 10389563200.

The previous prime is 20936154881. The next prime is 20936154907. The reversal of 20936154886 is 68845163902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20936154881) 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, 72696 + ... + 217156.

It is an arithmetic number, because the mean of its divisors is an integer number (1977540318).

Almost surely, 2^20936154886 is an apocalyptic number.

20936154886 is a deficient number, since it is larger than the sum of its proper divisors (10704490202).

20936154886 is a wasteful number, since it uses less digits than its factorization.

20936154886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145007.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 20936154886 in words is "twenty billion, nine hundred thirty-six million, one hundred fifty-four thousand, eight hundred eighty-six".