85278937497599 has 4 divisors (see below), whose sum is σ = 85278998310000. Its totient is φ = 85278876685200.

The previous prime is 85278937497563. The next prime is 85278937497613. The reversal of 85278937497599 is 99579473987258.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85278937497599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85278937497539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28251827 + ... + 31124324.

It is an arithmetic number, because the mean of its divisors is an integer number (21319749577500).

Almost surely, 2^{85278937497599} is an apocalyptic number.

85278937497599 is a deficient number, since it is larger than the sum of its proper divisors (60812401).

85278937497599 is a wasteful number, since it uses less digits than its factorization.

85278937497599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60812400.

The product of its digits is 86416243200, while the sum is 92.

The spelling of 85278937497599 in words is "eighty-five trillion, two hundred seventy-eight billion, nine hundred thirty-seven million, four hundred ninety-seven thousand, five hundred ninety-nine".