55113612678 has 96 divisors (see below), whose sum is σ = 125674934400. Its totient is φ = 17899377408.

The previous prime is 55113612661. The next prime is 55113612691. The reversal of 55113612678 is 87621631155.

55113612678 is a `hidden beast` number, since 5 + 511 + 3 + 6 + 126 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34040953 + ... + 34042571.

It is an arithmetic number, because the mean of its divisors is an integer number (1309113900).

Almost surely, 2^55113612678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55113612678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62837467200).

55113612678 is an abundant number, since it is smaller than the sum of its proper divisors (70561321722).

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

55113612678 is a wasteful number, since it uses less digits than its factorization.

55113612678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891 (or 1788 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 55113612678 in words is "fifty-five billion, one hundred thirteen million, six hundred twelve thousand, six hundred seventy-eight".