55555550610 has 32 divisors (see below), whose sum is σ = 152380939392. Its totient is φ = 12698411520.

The previous prime is 55555550599. The next prime is 55555550623. The reversal of 55555550610 is 1605555555.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon 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, 132274911 + ... + 132275330.

It is an arithmetic number, because the mean of its divisors is an integer number (4761904356).

Almost surely, 2^55555550610 is an apocalyptic number.

55555550610 is an abundant number, since it is smaller than the sum of its proper divisors (96825388782).

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

55555550610 is a wasteful number, since it uses less digits than its factorization.

55555550610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264550258.

The product of its (nonzero) digits is 468750, while the sum is 42.

The spelling of 55555550610 in words is "fifty-five billion, five hundred fifty-five million, five hundred fifty thousand, six hundred ten".