20870704512 has 256 divisors, whose sum is σ = 70961971200. Its totient is φ = 5915234304.

The previous prime is 20870704501. The next prime is 20870704529. The reversal of 20870704512 is 21540707802.

20870704512 is a `hidden beast` number, since 2 + 0 + 8 + 70 + 70 + 4 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3068988 + ... + 3075780.

It is an arithmetic number, because the mean of its divisors is an integer number (277195200).

Almost surely, 2^20870704512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20870704512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35480985600).

20870704512 is an abundant number, since it is smaller than the sum of its proper divisors (50091266688).

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

20870704512 is a wasteful number, since it uses less digits than its factorization.

20870704512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6950 (or 6932 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The spelling of 20870704512 in words is "twenty billion, eight hundred seventy million, seven hundred four thousand, five hundred twelve".