85401057274 has 32 divisors (see below), whose sum is σ = 138241933200. Its totient is φ = 39334159872.

The previous prime is 85401057263. The next prime is 85401057293. The reversal of 85401057274 is 47275010458.

It can be written as a sum of positive squares in 8 ways, for example, as 18833445225 + 66567612049 = 137235^2 + 258007^2 .

It is a super-2 number, since 2×85401057274² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85401057274.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44179612 + ... + 44181544.

Almost surely, 2^85401057274 is an apocalyptic number.

85401057274 is a deficient number, since it is larger than the sum of its proper divisors (52840875926).

85401057274 is a wasteful number, since it uses less digits than its factorization.

85401057274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4594.

The product of its (nonzero) digits is 313600, while the sum is 43.

The spelling of 85401057274 in words is "eighty-five billion, four hundred one million, fifty-seven thousand, two hundred seventy-four".