64913080185 has 64 divisors (see below), whose sum is σ = 117205470720. Its totient is φ = 34080480000.

The previous prime is 64913080151. The next prime is 64913080273. The reversal of 64913080185 is 58108031946.

64913080185 is a `hidden beast` number, since 6 + 491 + 3 + 0 + 80 + 1 + 85 = 666.

It is not a de Polignac number, because 64913080185 - 2⁶ = 64913080121 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64913080185.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6714255 + ... + 6723915.

It is an arithmetic number, because the mean of its divisors is an integer number (1831335480).

Almost surely, 2^64913080185 is an apocalyptic number.

It is an amenable number.

64913080185 is a deficient number, since it is larger than the sum of its proper divisors (52292390535).

64913080185 is a wasteful number, since it uses less digits than its factorization.

64913080185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10447 (or 10441 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 64913080185 in words is "sixty-four billion, nine hundred thirteen million, eighty thousand, one hundred eighty-five".