55144423460 has 96 divisors (see below), whose sum is σ = 135325354752. Its totient is φ = 18483678720.

The previous prime is 55144423459. The next prime is 55144423487. The reversal of 55144423460 is 6432444155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2086730 + ... + 2112990.

It is an arithmetic number, because the mean of its divisors is an integer number (1409639112).

Almost surely, 2^55144423460 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 55144423460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67662677376).

55144423460 is an abundant number, since it is smaller than the sum of its proper divisors (80180931292).

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

55144423460 is a wasteful number, since it uses less digits than its factorization.

55144423460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26613 (or 26611 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 55144423460 in words is "fifty-five billion, one hundred forty-four million, four hundred twenty-three thousand, four hundred sixty".