64815412585 has 64 divisors (see below), whose sum is σ = 100005580800. Its totient is φ = 39159187200.

The previous prime is 64815412579. The next prime is 64815412601. The reversal of 64815412585 is 58521451846.

It is not a de Polignac number, because 64815412585 - 2¹⁹ = 64814888297 is a prime.

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, 1592671 + ... + 1632859.

It is an arithmetic number, because the mean of its divisors is an integer number (1562587200).

Almost surely, 2^64815412585 is an apocalyptic number.

It is an amenable number.

64815412585 is a deficient number, since it is larger than the sum of its proper divisors (35190168215).

64815412585 is a wasteful number, since it uses less digits than its factorization.

64815412585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40342.

The product of its digits is 1536000, while the sum is 49.

The spelling of 64815412585 in words is "sixty-four billion, eight hundred fifteen million, four hundred twelve thousand, five hundred eighty-five".