82151808601 has 4 divisors (see below), whose sum is σ = 82154240272. Its totient is φ = 82149376932.

The previous prime is 82151808551. The next prime is 82151808643. The reversal of 82151808601 is 10680815128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82151808601 - 2²³ = 82143419993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82151806601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164435 + ... + 1232968.

It is an arithmetic number, because the mean of its divisors is an integer number (20538560068).

Almost surely, 2^82151808601 is an apocalyptic number.

It is an amenable number.

82151808601 is a deficient number, since it is larger than the sum of its proper divisors (2431671).

82151808601 is a wasteful number, since it uses less digits than its factorization.

82151808601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431670.

The product of its (nonzero) digits is 30720, while the sum is 40.

The spelling of 82151808601 in words is "eighty-two billion, one hundred fifty-one million, eight hundred eight thousand, six hundred one".