20156765336 has 16 divisors (see below), whose sum is σ = 38413508640. Its totient is φ = 9913163040.

The previous prime is 20156765333. The next prime is 20156765351. The reversal of 20156765336 is 63356765102.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20156765333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20651936 + ... + 20652911.

It is an arithmetic number, because the mean of its divisors is an integer number (2400844290).

Almost surely, 2^20156765336 is an apocalyptic number.

It is an amenable number.

20156765336 is a deficient number, since it is larger than the sum of its proper divisors (18256743304).

20156765336 is a wasteful number, since it uses less digits than its factorization.

20156765336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41304914 (or 41304910 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 20156765336 in words is "twenty billion, one hundred fifty-six million, seven hundred sixty-five thousand, three hundred thirty-six".