55555055550064 has 160 divisors (see below), whose sum is σ = 128591782742016. Its totient is φ = 22754075904000.

The previous prime is 55555055550053. The next prime is 55555055550139. The reversal of 55555055550064 is 46005555055555.

It is a super-2 number, since 2×55555055550064² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55555055549987 and 55555055550014.

It is a congruent number.

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, 805099564 + ... + 805168564.

Almost surely, 2^{55555055550064} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55555055550064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64295891371008).

55555055550064 is an abundant number, since it is smaller than the sum of its proper divisors (73036727191952).

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

55555055550064 is a wasteful number, since it uses less digits than its factorization.

55555055550064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72663 (or 72657 counting only the distinct ones).

The product of its (nonzero) digits is 46875000, while the sum is 55.

The spelling of 55555055550064 in words is "fifty-five trillion, five hundred fifty-five billion, fifty-five million, five hundred fifty thousand, sixty-four".