55561111730 has 64 divisors (see below), whose sum is σ = 111511572480. Its totient is φ = 19823975424.

The previous prime is 55561111729. The next prime is 55561111807. The reversal of 55561111730 is 3711116555.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361007 + ... + 491373.

It is an arithmetic number, because the mean of its divisors is an integer number (1742368320).

Almost surely, 2^55561111730 is an apocalyptic number.

55561111730 is an abundant number, since it is smaller than the sum of its proper divisors (55950460750).

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

55561111730 is a wasteful number, since it uses less digits than its factorization.

55561111730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130523.

The product of its (nonzero) digits is 15750, while the sum is 35.

The spelling of 55561111730 in words is "fifty-five billion, five hundred sixty-one million, one hundred eleven thousand, seven hundred thirty".