85620429018 has 24 divisors (see below), whose sum is σ = 185524211028. Its totient is φ = 28538099712.

The previous prime is 85620428977. The next prime is 85620429043. The reversal of 85620429018 is 81092402658.

85620429018 is a `hidden beast` number, since 8 + 5 + 620 + 4 + 2 + 9 + 0 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 85484310129 + 136118889 = 292377^2 + 11667^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99696 + ... + 425652.

Almost surely, 2^85620429018 is an apocalyptic number.

85620429018 is an abundant number, since it is smaller than the sum of its proper divisors (99903782010).

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

85620429018 is a wasteful number, since it uses less digits than its factorization.

85620429018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340558 (or 340555 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 85620429018 in words is "eighty-five billion, six hundred twenty million, four hundred twenty-nine thousand, eighteen".