85135059522 has 54 divisors (see below), whose sum is σ = 186643791243. Its totient is φ = 28046179584.

The previous prime is 85135059497. The next prime is 85135059593. The reversal of 85135059522 is 22595053158.

It is a happy number.

85135059522 is a `hidden beast` number, since 8 + 5 + 1 + 3 + 50 + 595 + 2 + 2 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 8572722921 + 76562336601 = 92589^2 + 276699^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=206319.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 120077304 + ... + 120078012.

Almost surely, 2^85135059522 is an apocalyptic number.

85135059522 is an abundant number, since it is smaller than the sum of its proper divisors (101508731721).

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

85135059522 is an frugal number, since it uses more digits than its factorization.

85135059522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 85135059522 in words is "eighty-five billion, one hundred thirty-five million, fifty-nine thousand, five hundred twenty-two".