54455990644 has 24 divisors (see below), whose sum is σ = 104933047968. Its totient is φ = 24521387040.

The previous prime is 54455990621. The next prime is 54455990657. The reversal of 54455990644 is 44609955445.

It is a congruent number.

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, 5778639 + ... + 5788054.

It is an arithmetic number, because the mean of its divisors is an integer number (4372210332).

Almost surely, 2^54455990644 is an apocalyptic number.

It is an amenable number.

54455990644 is a deficient number, since it is larger than the sum of its proper divisors (50477057324).

54455990644 is a wasteful number, since it uses less digits than its factorization.

54455990644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11566815 (or 11566813 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 55.

The spelling of 54455990644 in words is "fifty-four billion, four hundred fifty-five million, nine hundred ninety thousand, six hundred forty-four".