83937977538 has 32 divisors (see below), whose sum is σ = 169487942400. Its totient is φ = 27711624336.

The previous prime is 83937977531. The next prime is 83937977657. The reversal of 83937977538 is 83577973938.

It is not an unprimeable number, because it can be changed into a prime (83937977531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229345 + ... + 469547.

It is an arithmetic number, because the mean of its divisors is an integer number (5296498200).

Almost surely, 2^83937977538 is an apocalyptic number.

83937977538 is an abundant number, since it is smaller than the sum of its proper divisors (85549964862).

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

83937977538 is a wasteful number, since it uses less digits than its factorization.

83937977538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240766.

The product of its digits is 240045120, while the sum is 69.

The spelling of 83937977538 in words is "eighty-three billion, nine hundred thirty-seven million, nine hundred seventy-seven thousand, five hundred thirty-eight".