55611172784 has 40 divisors (see below), whose sum is σ = 111648092160. Its totient is φ = 26815134528.

The previous prime is 55611172781. The next prime is 55611172847. The reversal of 55611172784 is 48727111655.

It is not an unprimeable number, because it can be changed into a prime (55611172781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457232 + ... + 565935.

It is an arithmetic number, because the mean of its divisors is an integer number (2791202304).

Almost surely, 2^55611172784 is an apocalyptic number.

It is an amenable number.

55611172784 is an abundant number, since it is smaller than the sum of its proper divisors (56036919376).

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

55611172784 is a wasteful number, since it uses less digits than its factorization.

55611172784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023297 (or 1023291 counting only the distinct ones).

The product of its digits is 470400, while the sum is 47.

The spelling of 55611172784 in words is "fifty-five billion, six hundred eleven million, one hundred seventy-two thousand, seven hundred eighty-four".