83158161657865 has 16 divisors (see below), whose sum is σ = 117127789085952. Its totient is φ = 55481584302144.

The previous prime is 83158161657827. The next prime is 83158161657919. The reversal of 83158161657865 is 56875616185138.

It is not a de Polignac number, because 83158161657865 - 2¹⁷ = 83158161526793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83158161657794 and 83158161657803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32107397029 + ... + 32107399618.

It is an arithmetic number, because the mean of its divisors is an integer number (7320486817872).

Almost surely, 2^{83158161657865} is an apocalyptic number.

It is an amenable number.

83158161657865 is a deficient number, since it is larger than the sum of its proper divisors (33969627428087).

83158161657865 is a wasteful number, since it uses less digits than its factorization.

83158161657865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64214796696.

The product of its digits is 290304000, while the sum is 70.

The spelling of 83158161657865 in words is "eighty-three trillion, one hundred fifty-eight billion, one hundred sixty-one million, six hundred fifty-seven thousand, eight hundred sixty-five".