55691113686 has 64 divisors (see below), whose sum is σ = 124024836096. Its totient is φ = 16561440000.

The previous prime is 55691113669. The next prime is 55691113717. The reversal of 55691113686 is 68631119655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260811 + ... + 423561.

It is an arithmetic number, because the mean of its divisors is an integer number (1937888064).

Almost surely, 2^55691113686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55691113686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62012418048).

55691113686 is an abundant number, since it is smaller than the sum of its proper divisors (68333722410).

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

55691113686 is a wasteful number, since it uses less digits than its factorization.

55691113686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162917.

The product of its digits is 1166400, while the sum is 51.

The spelling of 55691113686 in words is "fifty-five billion, six hundred ninety-one million, one hundred thirteen thousand, six hundred eighty-six".