83611644611638 has 64 divisors (see below), whose sum is σ = 153395269715520. Its totient is φ = 33656345049600.

The previous prime is 83611644611629. The next prime is 83611644611773.

It is a happy number.

83611644611638 is nontrivially palindromic in base 10.

83611644611638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×83611644611638² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30802873 + ... + 33407188.

It is an arithmetic number, because the mean of its divisors is an integer number (2396801089305).

Almost surely, 2^{83611644611638} is an apocalyptic number.

83611644611638 is a deficient number, since it is larger than the sum of its proper divisors (69783625103882).

83611644611638 is a wasteful number, since it uses less digits than its factorization.

83611644611638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64210273.

The product of its digits is 11943936, while the sum is 58.

The spelling of 83611644611638 in words is "eighty-three trillion, six hundred eleven billion, six hundred forty-four million, six hundred eleven thousand, six hundred thirty-eight".