83940769587 has 18 divisors (see below), whose sum is σ = 114385130148. Its totient is φ = 54754474728.

The previous prime is 83940769553. The next prime is 83940769609. The reversal of 83940769587 is 78596704938.

It is not a de Polignac number, because 83940769587 - 2⁸ = 83940769331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83940769547) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23583714 + ... + 23587272.

Almost surely, 2^83940769587 is an apocalyptic number.

83940769587 is a deficient number, since it is larger than the sum of its proper divisors (30444360561).

83940769587 is an frugal number, since it uses more digits than its factorization.

83940769587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7215 (or 3609 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 66.

The spelling of 83940769587 in words is "eighty-three billion, nine hundred forty million, seven hundred sixty-nine thousand, five hundred eighty-seven".