22157065512 has 128 divisors (see below), whose sum is σ = 63271152000. Its totient is φ = 7180116480.

The previous prime is 22157065487. The next prime is 22157065529. The reversal of 22157065512 is 21556075122.

22157065512 is a `hidden beast` number, since 2 + 2 + 15 + 70 + 65 + 512 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2590539 + ... + 2599077.

It is an arithmetic number, because the mean of its divisors is an integer number (494305875).

Almost surely, 2^22157065512 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 22157065512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31635576000).

22157065512 is an abundant number, since it is smaller than the sum of its proper divisors (41114086488).

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

22157065512 is a wasteful number, since it uses less digits than its factorization.

22157065512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8888 (or 8878 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 22157065512 in words is "twenty-two billion, one hundred fifty-seven million, sixty-five thousand, five hundred twelve".