64117232605 has 16 divisors (see below), whose sum is σ = 77282411328. Its totient is φ = 51066288000.

The previous prime is 64117232579. The next prime is 64117232659. The reversal of 64117232605 is 50623271146.

It is not a de Polignac number, because 64117232605 - 2⁹ = 64117232093 is a prime.

It is a super-2 number, since 2×64117232605² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 1625770 + ... + 1664740.

It is an arithmetic number, because the mean of its divisors is an integer number (4830150708).

Almost surely, 2^64117232605 is an apocalyptic number.

It is an amenable number.

64117232605 is a deficient number, since it is larger than the sum of its proper divisors (13165178723).

64117232605 is a wasteful number, since it uses less digits than its factorization.

64117232605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40428.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 64117232605 in words is "sixty-four billion, one hundred seventeen million, two hundred thirty-two thousand, six hundred five".