64111896585 has 72 divisors (see below), whose sum is σ = 124219105920. Its totient is φ = 30557545920.

The previous prime is 64111896529. The next prime is 64111896637. The reversal of 64111896585 is 58569811146.

64111896585 is a `hidden beast` number, since 6 + 41 + 1 + 18 + 9 + 6 + 585 = 666.

It is not a de Polignac number, because 64111896585 - 2¹¹ = 64111894537 is a prime.

It is a super-2 number, since 2×64111896585² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 221472 + ... + 421038.

It is an arithmetic number, because the mean of its divisors is an integer number (1725265360).

Almost surely, 2^64111896585 is an apocalyptic number.

It is an amenable number.

64111896585 is a deficient number, since it is larger than the sum of its proper divisors (60107209335).

64111896585 is a wasteful number, since it uses less digits than its factorization.

64111896585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199659 (or 199645 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 54.

The spelling of 64111896585 in words is "sixty-four billion, one hundred eleven million, eight hundred ninety-six thousand, five hundred eighty-five".