83777749913 has 16 divisors (see below), whose sum is σ = 99670099200. Its totient is φ = 69413086080.

The previous prime is 83777749901. The next prime is 83777749919. The reversal of 83777749913 is 31994777738.

It is not a de Polignac number, because 83777749913 - 2¹⁸ = 83777487769 is a prime.

It is a super-2 number, since 2×83777749913² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83777749913.

It is not an unprimeable number, because it can be changed into a prime (83777749919) 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, 3696668 + ... + 3719261.

It is an arithmetic number, because the mean of its divisors is an integer number (6229381200).

Almost surely, 2^83777749913 is an apocalyptic number.

It is an amenable number.

83777749913 is a deficient number, since it is larger than the sum of its proper divisors (15892349287).

83777749913 is a wasteful number, since it uses less digits than its factorization.

83777749913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416032.

The product of its digits is 56010528, while the sum is 65.

The spelling of 83777749913 in words is "eighty-three billion, seven hundred seventy-seven million, seven hundred forty-nine thousand, nine hundred thirteen".