55756342440 has 128 divisors (see below), whose sum is σ = 186346224000. Its totient is φ = 14829018624.

The previous prime is 55756342429. The next prime is 55756342459. The reversal of 55756342440 is 4424365755.

55756342440 is a `hidden beast` number, since 5 + 5 + 7 + 5 + 634 + 2 + 4 + 4 + 0 = 666.

55756342440 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 31 ways as a sum of consecutive naturals, for example, 341212 + ... + 477428.

It is an arithmetic number, because the mean of its divisors is an integer number (1455829875).

Almost surely, 2^55756342440 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 55756342440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93173112000).

55756342440 is an abundant number, since it is smaller than the sum of its proper divisors (130589881560).

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

55756342440 is a wasteful number, since it uses less digits than its factorization.

55756342440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136616 (or 136606 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 45.

The spelling of 55756342440 in words is "fifty-five billion, seven hundred fifty-six million, three hundred forty-two thousand, four hundred forty".