64069865352 has 80 divisors (see below), whose sum is σ = 182840987340. Its totient is φ = 20953655424.

The previous prime is 64069865341. The next prime is 64069865437. The reversal of 64069865352 is 25356896046.

64069865352 is a `hidden beast` number, since 6 + 40 + 69 + 8 + 6 + 535 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 60483532356 + 3586332996 = 245934^2 + 59886^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 898423 + ... + 967110.

Almost surely, 2^64069865352 is an apocalyptic number.

It is an amenable number.

64069865352 is an abundant number, since it is smaller than the sum of its proper divisors (118771121988).

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

64069865352 is a wasteful number, since it uses less digits than its factorization.

64069865352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865604 (or 1865591 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 64069865352 in words is "sixty-four billion, sixty-nine million, eight hundred sixty-five thousand, three hundred fifty-two".