55635298440 has 64 divisors (see below), whose sum is σ = 169734830400. Its totient is φ = 14584618752.

The previous prime is 55635298429. The next prime is 55635298507. The reversal of 55635298440 is 4489253655.

It is a happy number.

It is a super-3 number, since 3×55635298440³ (a number of 33 digits) contains 333 as substring.

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, 3921967 + ... + 3936126.

It is an arithmetic number, because the mean of its divisors is an integer number (2652106725).

Almost surely, 2^55635298440 is an apocalyptic number.

It is an amenable number.

55635298440 is an abundant number, since it is smaller than the sum of its proper divisors (114099531960).

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

55635298440 is a wasteful number, since it uses less digits than its factorization.

55635298440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7858166 (or 7858162 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 55635298440 in words is "fifty-five billion, six hundred thirty-five million, two hundred ninety-eight thousand, four hundred forty".