54642818640 has 40 divisors (see below), whose sum is σ = 169392738528. Its totient is φ = 14571418240.

The previous prime is 54642818627. The next prime is 54642818647. The reversal of 54642818640 is 4681824645.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 54642818640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54642818647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113838966 + ... + 113839445.

Almost surely, 2^54642818640 is an apocalyptic number.

It is an amenable number.

54642818640 is an abundant number, since it is smaller than the sum of its proper divisors (114749919888).

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

54642818640 is a wasteful number, since it uses less digits than its factorization.

54642818640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227678427 (or 227678421 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 48.

The spelling of 54642818640 in words is "fifty-four billion, six hundred forty-two million, eight hundred eighteen thousand, six hundred forty".