85278937497601 has 4 divisors (see below), whose sum is σ = 85279121854804. Its totient is φ = 85278753140400.

The previous prime is 85278937497563. The next prime is 85278937497613. The reversal of 85278937497601 is 10679473987258.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49843585880001 + 35435351617600 = 7059999^2 + 5952760^2 .

It is a cyclic number.

It is not a de Polignac number, because 85278937497601 - 2³¹ = 85276790013953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85278937492601) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 91482990 + ... + 92410471.

It is an arithmetic number, because the mean of its divisors is an integer number (21319780463701).

It is a 1-persistent number, because it is pandigital, but 2⋅85278937497601 = 170557874995202 is not.

Almost surely, 2^{85278937497601} is an apocalyptic number.

It is an amenable number.

85278937497601 is a deficient number, since it is larger than the sum of its proper divisors (184357203).

85278937497601 is a wasteful number, since it uses less digits than its factorization.

85278937497601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184357202.

The product of its (nonzero) digits is 1280240640, while the sum is 76.

The spelling of 85278937497601 in words is "eighty-five trillion, two hundred seventy-eight billion, nine hundred thirty-seven million, four hundred ninety-seven thousand, six hundred one".