83134785072 has 30 divisors (see below), whose sum is σ = 214770022068. Its totient is φ = 27710929152.

The previous prime is 83134785059. The next prime is 83134785077. The reversal of 83134785072 is 27058743138.

It is a super-2 number, since 2×83134785072² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (83134785077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1976808 + ... + 2018424.

Almost surely, 2^83134785072 is an apocalyptic number.

It is an amenable number.

83134785072 is an abundant number, since it is smaller than the sum of its proper divisors (131635236996).

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

83134785072 is an frugal number, since it uses more digits than its factorization.

83134785072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83245 (or 41622 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

Multiplying 83134785072 by its sum of digits (48), we get a square (3990469683456 = 1997616²).

83134785072 divided by its sum of digits (48) gives a square (1731974689 = 41617²).

The spelling of 83134785072 in words is "eighty-three billion, one hundred thirty-four million, seven hundred eighty-five thousand, seventy-two".