54621645560 has 64 divisors (see below), whose sum is σ = 125347646880. Its totient is φ = 21416970240.

The previous prime is 54621645539. The next prime is 54621645563. The reversal of 54621645560 is 6554612645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54621645563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418580 + ... + 533340.

Almost surely, 2^54621645560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54621645560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62673823440).

54621645560 is an abundant number, since it is smaller than the sum of its proper divisors (70726001320).

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

54621645560 is a wasteful number, since it uses less digits than its factorization.

54621645560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115008 (or 115004 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 54621645560 in words is "fifty-four billion, six hundred twenty-one million, six hundred forty-five thousand, five hundred sixty".