55555561116 has 72 divisors (see below), whose sum is σ = 158481414000. Its totient is φ = 16254497280.

The previous prime is 55555561109. The next prime is 55555561121. The reversal of 55555561116 is 61116555555.

It is a super-2 number, since 2×55555561116² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2407341 + ... + 2430308.

It is an arithmetic number, because the mean of its divisors is an integer number (2201130750).

Almost surely, 2^55555561116 is an apocalyptic number.

It is an amenable number.

55555561116 is an abundant number, since it is smaller than the sum of its proper divisors (102925852884).

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

55555561116 is a wasteful number, since it uses less digits than its factorization.

55555561116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837699 (or 4837694 counting only the distinct ones).

The product of its digits is 562500, while the sum is 45.

The spelling of 55555561116 in words is "fifty-five billion, five hundred fifty-five million, five hundred sixty-one thousand, one hundred sixteen".