55207774320 has 40 divisors (see below), whose sum is σ = 171144101136. Its totient is φ = 14722073088.

The previous prime is 55207774301. The next prime is 55207774337. The reversal of 55207774320 is 2347770255.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115015957 + ... + 115016436.

Almost surely, 2^55207774320 is an apocalyptic number.

It is an amenable number.

55207774320 is an abundant number, since it is smaller than the sum of its proper divisors (115936326816).

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

55207774320 is a wasteful number, since it uses less digits than its factorization.

55207774320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230032409 (or 230032403 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 42.

The spelling of 55207774320 in words is "fifty-five billion, two hundred seven million, seven hundred seventy-four thousand, three hundred twenty".