55144400260 has 48 divisors (see below), whose sum is σ = 121186751616. Its totient is φ = 21037862912.

The previous prime is 55144400249. The next prime is 55144400279. The reversal of 55144400260 is 6200444155.

It is a happy number.

55144400260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 13117 + ... + 332356.

It is an arithmetic number, because the mean of its divisors is an integer number (2524723992).

Almost surely, 2^55144400260 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 55144400260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60593375808).

55144400260 is an abundant number, since it is smaller than the sum of its proper divisors (66042351356).

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

55144400260 is a wasteful number, since it uses less digits than its factorization.

55144400260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345852 (or 345850 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 55144400260 in words is "fifty-five billion, one hundred forty-four million, four hundred thousand, two hundred sixty".