83156180905 has 32 divisors (see below), whose sum is σ = 116018380800. Its totient is φ = 56034286272.

The previous prime is 83156180903. The next prime is 83156180923. The reversal of 83156180905 is 50908165138.

It is a cyclic number.

It is not a de Polignac number, because 83156180905 - 2¹ = 83156180903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83156180903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7393276 + ... + 7404514.

It is an arithmetic number, because the mean of its divisors is an integer number (3625574400).

Almost surely, 2^83156180905 is an apocalyptic number.

It is an amenable number.

83156180905 is a deficient number, since it is larger than the sum of its proper divisors (32862199895).

83156180905 is a wasteful number, since it uses less digits than its factorization.

83156180905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14893.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 83156180905 in words is "eighty-three billion, one hundred fifty-six million, one hundred eighty thousand, nine hundred five".