64223512605 has 128 divisors (see below), whose sum is σ = 139058380800. Its totient is φ = 27484883712.

The previous prime is 64223512583. The next prime is 64223512657. The reversal of 64223512605 is 50621532246.

64223512605 is a `hidden beast` number, since 6 + 4 + 2 + 2 + 35 + 12 + 605 = 666.

It is not a de Polignac number, because 64223512605 - 2¹² = 64223508509 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64223512605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 990111 + ... + 1052979.

It is an arithmetic number, because the mean of its divisors is an integer number (1086393600).

Almost surely, 2^64223512605 is an apocalyptic number.

It is an amenable number.

64223512605 is an abundant number, since it is smaller than the sum of its proper divisors (74834868195).

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

64223512605 is a wasteful number, since it uses less digits than its factorization.

64223512605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62960 (or 62954 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 64223512605 in words is "sixty-four billion, two hundred twenty-three million, five hundred twelve thousand, six hundred five".