64152784656 has 45 divisors (see below), whose sum is σ = 179547202471. Its totient is φ = 21383248416.

The previous prime is 64152784651. The next prime is 64152784687. The reversal of 64152784656 is 65648725146.

The square root of 64152784656 is 253284.

It is a perfect power (a square), and thus also a powerful number.

64152784656 is a `hidden beast` number, since 64 + 1 + 52 + 78 + 465 + 6 = 666.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64152784651) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3028855 + ... + 3049961.

Almost surely, 2^64152784656 is an apocalyptic number.

64152784656 is the 253284-th square number.

It is an amenable number.

64152784656 is an abundant number, since it is smaller than the sum of its proper divisors (115394417815).

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

64152784656 is an frugal number, since it uses more digits than its factorization.

64152784656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42228 (or 21112 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 64152784656 in words is "sixty-four billion, one hundred fifty-two million, seven hundred eighty-four thousand, six hundred fifty-six".