55168551720 has 96 divisors (see below), whose sum is σ = 179367196320. Its totient is φ = 14705919360.

The previous prime is 55168551667. The next prime is 55168551749. The reversal of 55168551720 is 2715586155.

55168551720 is a `hidden beast` number, since 5 + 51 + 6 + 85 + 517 + 2 + 0 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 946215 + ... + 1002825.

It is an arithmetic number, because the mean of its divisors is an integer number (1868408295).

Almost surely, 2^55168551720 is an apocalyptic number.

It is an amenable number.

55168551720 is an abundant number, since it is smaller than the sum of its proper divisors (124198644600).

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

55168551720 is a wasteful number, since it uses less digits than its factorization.

55168551720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59335 (or 59328 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 45.

The spelling of 55168551720 in words is "fifty-five billion, one hundred sixty-eight million, five hundred fifty-one thousand, seven hundred twenty".