83616861937 has 16 divisors (see below), whose sum is σ = 101050758144. Its totient is φ = 67667904000.

The previous prime is 83616861917. The next prime is 83616861947. The reversal of 83616861937 is 73916861638.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83616861937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83616861917) 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, 4690264 + ... + 4708057.

It is an arithmetic number, because the mean of its divisors is an integer number (6315672384).

Almost surely, 2^83616861937 is an apocalyptic number.

It is an amenable number.

83616861937 is a deficient number, since it is larger than the sum of its proper divisors (17433896207).

83616861937 is a wasteful number, since it uses less digits than its factorization.

83616861937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9398400.

The product of its digits is 7838208, while the sum is 58.

The spelling of 83616861937 in words is "eighty-three billion, six hundred sixteen million, eight hundred sixty-one thousand, nine hundred thirty-seven".