42170204664 has 128 divisors (see below), whose sum is σ = 140919744000. Its totient is φ = 11414483712.

The previous prime is 42170204651. The next prime is 42170204707. The reversal of 42170204664 is 46640207124.

42170204664 is a `hidden beast` number, since 4 + 2 + 170 + 20 + 466 + 4 = 666.

It is a super-2 number, since 2×42170204664² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 705229 + ... + 762684.

It is an arithmetic number, because the mean of its divisors is an integer number (1100935500).

Almost surely, 2^42170204664 is an apocalyptic number.

It is an amenable number.

42170204664 is an abundant number, since it is smaller than the sum of its proper divisors (98749539336).

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

42170204664 is a wasteful number, since it uses less digits than its factorization.

42170204664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467954 (or 1467944 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 42170204664 in words is "forty-two billion, one hundred seventy million, two hundred four thousand, six hundred sixty-four".