55180017776 has 40 divisors (see below), whose sum is σ = 115348283904. Its totient is φ = 25420573440.

The previous prime is 55180017769. The next prime is 55180017787. The reversal of 55180017776 is 67771008155.

It is a self number, because there is not a number n which added to its sum of digits gives 55180017776.

It is a congruent number.

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, 132656 + ... + 357711.

Almost surely, 2^55180017776 is an apocalyptic number.

It is an amenable number.

55180017776 is an abundant number, since it is smaller than the sum of its proper divisors (60168266128).

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

55180017776 is a wasteful number, since it uses less digits than its factorization.

55180017776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490929 (or 490923 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 47.

The spelling of 55180017776 in words is "fifty-five billion, one hundred eighty million, seventeen thousand, seven hundred seventy-six".