55500566512 has 80 divisors (see below), whose sum is σ = 115536355200. Its totient is φ = 25748547840.

The previous prime is 55500566503. The next prime is 55500566551. The reversal of 55500566512 is 21566500555.

It is a super-2 number, since 2×55500566512² (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 15 ways as a sum of consecutive naturals, for example, 4962687 + ... + 4973857.

It is an arithmetic number, because the mean of its divisors is an integer number (1444204440).

Almost surely, 2^55500566512 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 55500566512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57768177600).

55500566512 is an abundant number, since it is smaller than the sum of its proper divisors (60035788688).

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

55500566512 is a wasteful number, since it uses less digits than its factorization.

55500566512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11534 (or 11528 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 55500566512 in words is "fifty-five billion, five hundred million, five hundred sixty-six thousand, five hundred twelve".