42553601664 has 64 divisors (see below), whose sum is σ = 129180584640. Its totient is φ = 12158171136.

The previous prime is 42553601633. The next prime is 42553601677. The reversal of 42553601664 is 46610635524.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7912789 + ... + 7918164.

It is an arithmetic number, because the mean of its divisors is an integer number (2018446635).

Almost surely, 2^42553601664 is an apocalyptic number.

It is an amenable number.

42553601664 is an abundant number, since it is smaller than the sum of its proper divisors (86626982976).

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

42553601664 is a wasteful number, since it uses less digits than its factorization.

42553601664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15830977 (or 15830965 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 42553601664 in words is "forty-two billion, five hundred fifty-three million, six hundred one thousand, six hundred sixty-four".