54421660890 has 128 divisors (see below), whose sum is σ = 153760446720. Its totient is φ = 13649946624.

The previous prime is 54421660889. The next prime is 54421660939. The reversal of 54421660890 is 9806612445.

54421660890 is a `hidden beast` number, since 544 + 2 + 16 + 6 + 0 + 8 + 90 = 666.

54421660890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9879517 + ... + 9885023.

It is an arithmetic number, because the mean of its divisors is an integer number (1201253490).

Almost surely, 2^54421660890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54421660890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76880223360).

54421660890 is an abundant number, since it is smaller than the sum of its proper divisors (99338785830).

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

54421660890 is a wasteful number, since it uses less digits than its factorization.

54421660890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7693 (or 7687 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 54421660890 in words is "fifty-four billion, four hundred twenty-one million, six hundred sixty thousand, eight hundred ninety".