55380396733440 has 176 divisors, whose sum is σ = 177136642715328. Its totient is φ = 14767613476864.

The previous prime is 55380396733421. The next prime is 55380396733477. The reversal of 55380396733440 is 4433769308355.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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, 884597179 + ... + 884659781.

Almost surely, 2^{55380396733440} is an apocalyptic number.

It is an amenable number.

55380396733440 is an abundant number, since it is smaller than the sum of its proper divisors (121756245981888).

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

55380396733440 is a wasteful number, since it uses less digits than its factorization.

55380396733440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120224 (or 120206 counting only the distinct ones).

The product of its (nonzero) digits is 97977600, while the sum is 60.

The spelling of 55380396733440 in words is "fifty-five trillion, three hundred eighty billion, three hundred ninety-six million, seven hundred thirty-three thousand, four hundred forty".