54121605656 has 96 divisors (see below), whose sum is σ = 109050429600. Its totient is φ = 25146455040.

The previous prime is 54121605649. The next prime is 54121605689. The reversal of 54121605656 is 65650612145.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30455840 + ... + 30457616.

It is an arithmetic number, because the mean of its divisors is an integer number (1135941975).

Almost surely, 2^54121605656 is an apocalyptic number.

It is an amenable number.

54121605656 is an abundant number, since it is smaller than the sum of its proper divisors (54928823944).

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

54121605656 is a wasteful number, since it uses less digits than its factorization.

54121605656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969 (or 1922 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 54121605656 in words is "fifty-four billion, one hundred twenty-one million, six hundred five thousand, six hundred fifty-six".