20842112970 has 128 divisors (see below), whose sum is σ = 63804948480. Its totient is φ = 4742452800.

The previous prime is 20842112957. The next prime is 20842113007. The reversal of 20842112970 is 7921124802.

20842112970 is a `hidden beast` number, since 208 + 421 + 1 + 29 + 7 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 396745 + ... + 446195.

It is an arithmetic number, because the mean of its divisors is an integer number (498476160).

Almost surely, 2^20842112970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20842112970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31902474240).

20842112970 is an abundant number, since it is smaller than the sum of its proper divisors (42962835510).

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

20842112970 is a wasteful number, since it uses less digits than its factorization.

20842112970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49697 (or 49691 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 20842112970 in words is "twenty billion, eight hundred forty-two million, one hundred twelve thousand, nine hundred seventy".