64570722048 has 432 divisors, whose sum is σ = 223561927680. Its totient is φ = 18205544448.

The previous prime is 64570722011. The next prime is 64570722049. The reversal of 64570722048 is 84022707546.

It is a happy number.

64570722048 is a `hidden beast` number, since 6 + 4 + 570 + 72 + 2 + 0 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a junction number, because it is equal to n+sod(n) for n = 64570721994 and 64570722012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64570722049) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34400086 + ... + 34401962.

Almost surely, 2^64570722048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64570722048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111780963840).

64570722048 is an abundant number, since it is smaller than the sum of its proper divisors (158991205632).

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

64570722048 is an equidigital number, since it uses as much as digits as its factorization.

64570722048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 1968 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 64570722048 in words is "sixty-four billion, five hundred seventy million, seven hundred twenty-two thousand, forty-eight".