20979087150 has 192 divisors, whose sum is σ = 63196098048. Its totient is φ = 4496117760.

The previous prime is 20979087131. The next prime is 20979087161. The reversal of 20979087150 is 5178097902.

It is a self number, because there is not a number n which added to its sum of digits gives 20979087150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5049474 + ... + 5053626.

It is an arithmetic number, because the mean of its divisors is an integer number (329146344).

Almost surely, 2^20979087150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20979087150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31598049024).

20979087150 is an abundant number, since it is smaller than the sum of its proper divisors (42217010898).

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

20979087150 is a wasteful number, since it uses less digits than its factorization.

20979087150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475 (or 4470 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 48.

The spelling of 20979087150 in words is "twenty billion, nine hundred seventy-nine million, eighty-seven thousand, one hundred fifty".