642418466160 has 80 divisors (see below), whose sum is σ = 2015491250304. Its totient is φ = 169247590656.

The previous prime is 642418466159. The next prime is 642418466171. The reversal of 642418466160 is 61664814246.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 16105042 + ... + 16144881.

Almost surely, 2^642418466160 is an apocalyptic number.

642418466160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

642418466160 is an abundant number, since it is smaller than the sum of its proper divisors (1373072784144).

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

642418466160 is a wasteful number, since it uses less digits than its factorization.

642418466160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32250022 (or 32250016 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 642418466160 in words is "six hundred forty-two billion, four hundred eighteen million, four hundred sixty-six thousand, one hundred sixty".