54521323656 has 64 divisors (see below), whose sum is σ = 144502970880. Its totient is φ = 17112176640.

The previous prime is 54521323609. The next prime is 54521323663. The reversal of 54521323656 is 65632312545.

It is a happy 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, 962761 + ... + 1017816.

It is an arithmetic number, because the mean of its divisors is an integer number (2257858920).

Almost surely, 2^54521323656 is an apocalyptic number.

It is an amenable number.

54521323656 is an abundant number, since it is smaller than the sum of its proper divisors (89981647224).

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

54521323656 is a wasteful number, since it uses less digits than its factorization.

54521323656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980654 (or 1980650 counting only the distinct ones).

The product of its digits is 648000, while the sum is 42.

The spelling of 54521323656 in words is "fifty-four billion, five hundred twenty-one million, three hundred twenty-three thousand, six hundred fifty-six".