20716155156 has 48 divisors (see below), whose sum is σ = 49500025344. Its totient is φ = 6740662656.

The previous prime is 20716155151. The next prime is 20716155203. The reversal of 20716155156 is 65155161702.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20716155151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42621 + ... + 207963.

It is an arithmetic number, because the mean of its divisors is an integer number (1031250528).

Almost surely, 2^20716155156 is an apocalyptic number.

It is an amenable number.

20716155156 is an abundant number, since it is smaller than the sum of its proper divisors (28783870188).

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

20716155156 is a wasteful number, since it uses less digits than its factorization.

20716155156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165600 (or 165598 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 39.

The spelling of 20716155156 in words is "twenty billion, seven hundred sixteen million, one hundred fifty-five thousand, one hundred fifty-six".