64256572907296 has 48 divisors (see below), whose sum is σ = 157720678960320. Its totient is φ = 25035028404480.

The previous prime is 64256572907269. The next prime is 64256572907297. The reversal of 64256572907296 is 69270927565246.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64256572907297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13039074831 + ... + 13039079758.

It is an arithmetic number, because the mean of its divisors is an integer number (3285847478340).

Almost surely, 2^{64256572907296} is an apocalyptic number.

It is an amenable number.

64256572907296 is an abundant number, since it is smaller than the sum of its proper divisors (93464106053024).

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

64256572907296 is a wasteful number, since it uses less digits than its factorization.

64256572907296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26078154617 (or 26078154609 counting only the distinct ones).

The product of its (nonzero) digits is 685843200, while the sum is 70.

The spelling of 64256572907296 in words is "sixty-four trillion, two hundred fifty-six billion, five hundred seventy-two million, nine hundred seven thousand, two hundred ninety-six".