54556921812 has 48 divisors (see below), whose sum is σ = 128315303424. Its totient is φ = 18040620000.

The previous prime is 54556921739. The next prime is 54556921823. The reversal of 54556921812 is 21812965545.

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, 7936737 + ... + 7943607.

It is an arithmetic number, because the mean of its divisors is an integer number (2673235488).

Almost surely, 2^54556921812 is an apocalyptic number.

It is an amenable number.

54556921812 is an abundant number, since it is smaller than the sum of its proper divisors (73758381612).

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

54556921812 is a wasteful number, since it uses less digits than its factorization.

54556921812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12060 (or 12058 counting only the distinct ones).

The product of its digits is 864000, while the sum is 48.

The spelling of 54556921812 in words is "fifty-four billion, five hundred fifty-six million, nine hundred twenty-one thousand, eight hundred twelve".