83520734940 has 36 divisors (see below), whose sum is σ = 253346229864. Its totient is φ = 22272195936.

The previous prime is 83520734933. The next prime is 83520734959. The reversal of 83520734940 is 4943702538.

83520734940 is a `hidden beast` number, since 8 + 3 + 520 + 7 + 34 + 94 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232001862 + ... + 232002221.

It is an arithmetic number, because the mean of its divisors is an integer number (7037395274).

Almost surely, 2^83520734940 is an apocalyptic number.

It is an amenable number.

83520734940 is an abundant number, since it is smaller than the sum of its proper divisors (169825494924).

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

83520734940 is a wasteful number, since it uses less digits than its factorization.

83520734940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464004098 (or 464004093 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 83520734940 in words is "eighty-three billion, five hundred twenty million, seven hundred thirty-four thousand, nine hundred forty".