83279317920 has 96 divisors (see below), whose sum is σ = 266630434560. Its totient is φ = 21843747840.

The previous prime is 83279317841. The next prime is 83279317939. The reversal of 83279317920 is 2971397238.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392840 + ... + 1451399.

It is an arithmetic number, because the mean of its divisors is an integer number (2777400360).

Almost surely, 2^83279317920 is an apocalyptic number.

83279317920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83279317920 is an abundant number, since it is smaller than the sum of its proper divisors (183351116640).

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

83279317920 is a wasteful number, since it uses less digits than its factorization.

83279317920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844318 (or 2844310 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 51.

The spelling of 83279317920 in words is "eighty-three billion, two hundred seventy-nine million, three hundred seventeen thousand, nine hundred twenty".