85179929491 has 8 divisors (see below), whose sum is σ = 88834143104. Its totient is φ = 81582370560.

The previous prime is 85179929489. The next prime is 85179929533. The reversal of 85179929491 is 19492997158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85179929491 - 2¹ = 85179929489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85179929431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14160600 + ... + 14166613.

It is an arithmetic number, because the mean of its divisors is an integer number (11104267888).

Almost surely, 2^85179929491 is an apocalyptic number.

85179929491 is a deficient number, since it is larger than the sum of its proper divisors (3654213613).

85179929491 is a wasteful number, since it uses less digits than its factorization.

85179929491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28327341.

The product of its digits is 14696640, while the sum is 64.

The spelling of 85179929491 in words is "eighty-five billion, one hundred seventy-nine million, nine hundred twenty-nine thousand, four hundred ninety-one".