55105665570 has 48 divisors (see below), whose sum is σ = 143286579072. Its totient is φ = 14693628960.

The previous prime is 55105665551. The next prime is 55105665599. The reversal of 55105665570 is 7556650155.

55105665570 is a `hidden beast` number, since 5 + 5 + 10 + 5 + 6 + 65 + 570 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1781335 + ... + 1812005.

It is an arithmetic number, because the mean of its divisors is an integer number (2985137064).

Almost surely, 2^55105665570 is an apocalyptic number.

55105665570 is an abundant number, since it is smaller than the sum of its proper divisors (88180913502).

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

55105665570 is a wasteful number, since it uses less digits than its factorization.

55105665570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50647 (or 50644 counting only the distinct ones).

The product of its (nonzero) digits is 787500, while the sum is 45.

The spelling of 55105665570 in words is "fifty-five billion, one hundred five million, six hundred sixty-five thousand, five hundred seventy".