64578963426075 has 768 divisors, whose sum is σ = 152659029196800. Its totient is φ = 26072102707200.

The previous prime is 64578963426071. The next prime is 64578963426091. The reversal of 64578963426075 is 57062436987546.

It is a happy number.

64578963426075 is a `hidden beast` number, since 6 + 4 + 5 + 7 + 8 + 9 + 6 + 3 + 4 + 2 + 607 + 5 = 666.

It is not a de Polignac number, because 64578963426075 - 2² = 64578963426071 is a prime.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64578963425994 and 64578963426012.

It is not an unprimeable number, because it can be changed into a prime (64578963426071) by changing a digit.

It is a polite number, since it can be written in 767 ways as a sum of consecutive naturals, for example, 76971350506 + ... + 76971351344.

It is an arithmetic number, because the mean of its divisors is an integer number (198774777600).

Almost surely, 2^{64578963426075} is an apocalyptic number.

64578963426075 is an abundant number, since it is smaller than the sum of its proper divisors (88080065770725).

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

64578963426075 is a wasteful number, since it uses less digits than its factorization.

64578963426075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 1828915200, while the sum is 72.

The spelling of 64578963426075 in words is "sixty-four trillion, five hundred seventy-eight billion, nine hundred sixty-three million, four hundred twenty-six thousand, seventy-five".