85724607955 has 24 divisors (see below), whose sum is σ = 119689220160. Its totient is φ = 58770472320.

The previous prime is 85724607931. The next prime is 85724607973. The reversal of 85724607955 is 55970642758.

It is not a de Polignac number, because 85724607955 - 2⁷ = 85724607827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85724607955.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1248151 + ... + 1315039.

It is an arithmetic number, because the mean of its divisors is an integer number (4987050840).

Almost surely, 2^85724607955 is an apocalyptic number.

85724607955 is a deficient number, since it is larger than the sum of its proper divisors (33964612205).

85724607955 is a wasteful number, since it uses less digits than its factorization.

85724607955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72139 (or 72132 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 58.

The spelling of 85724607955 in words is "eighty-five billion, seven hundred twenty-four million, six hundred seven thousand, nine hundred fifty-five".