85219992516 has 24 divisors (see below), whose sum is σ = 209312262880. Its totient is φ = 26911576512.

The previous prime is 85219992479. The next prime is 85219992547. The reversal of 85219992516 is 61529991258.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186885721 + ... + 186886176.

Almost surely, 2^85219992516 is an apocalyptic number.

It is an amenable number.

85219992516 is an abundant number, since it is smaller than the sum of its proper divisors (124092270364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85219992516 is a wasteful number, since it uses less digits than its factorization.

85219992516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373771923 (or 373771921 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 57.

The spelling of 85219992516 in words is "eighty-five billion, two hundred nineteen million, nine hundred ninety-two thousand, five hundred sixteen".