55447117420 has 24 divisors (see below), whose sum is σ = 116810969184. Its totient is φ = 22107985536.

The previous prime is 55447117393. The next prime is 55447117433. The reversal of 55447117420 is 2471174455.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4422424 + ... + 4434943.

It is an arithmetic number, because the mean of its divisors is an integer number (4867123716).

Almost surely, 2^55447117420 is an apocalyptic number.

It is an amenable number.

55447117420 is an abundant number, since it is smaller than the sum of its proper divisors (61363851764).

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

55447117420 is a wasteful number, since it uses less digits than its factorization.

55447117420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8857689 (or 8857687 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The spelling of 55447117420 in words is "fifty-five billion, four hundred forty-seven million, one hundred seventeen thousand, four hundred twenty".