83993472920 has 32 divisors (see below), whose sum is σ = 215983216800. Its totient is φ = 28797762048.

The previous prime is 83993472883. The next prime is 83993472923. The reversal of 83993472920 is 2927439938.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83993472923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149988065 + ... + 149988624.

It is an arithmetic number, because the mean of its divisors is an integer number (6749475525).

Almost surely, 2^83993472920 is an apocalyptic number.

It is an amenable number.

83993472920 is an abundant number, since it is smaller than the sum of its proper divisors (131989743880).

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

83993472920 is a wasteful number, since it uses less digits than its factorization.

83993472920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299976707 (or 299976703 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 83993472920 in words is "eighty-three billion, nine hundred ninety-three million, four hundred seventy-two thousand, nine hundred twenty".