64254719222784 has 264 divisors, whose sum is σ = 187823116982592. Its totient is φ = 21154142208000.

The previous prime is 64254719222779. The next prime is 64254719222791. The reversal of 64254719222784 is 48722291745246.

64254719222784 is a `hidden beast` number, since 6 + 4 + 2 + 5 + 471 + 92 + 2 + 2 + 78 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3253228909 + ... + 3253248659.

Almost surely, 2^{64254719222784} is an apocalyptic number.

64254719222784 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64254719222784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93911558491296).

64254719222784 is an abundant number, since it is smaller than the sum of its proper divisors (123568397759808).

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

64254719222784 is a wasteful number, since it uses less digits than its factorization.

64254719222784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24113 (or 24092 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 63.

The spelling of 64254719222784 in words is "sixty-four trillion, two hundred fifty-four billion, seven hundred nineteen million, two hundred twenty-two thousand, seven hundred eighty-four".