64696973457 has 8 divisors (see below), whose sum is σ = 91336903776. Its totient is φ = 40594179392.

The previous prime is 64696973441. The next prime is 64696973459. The reversal of 64696973457 is 75437969646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64696973457 - 2⁴ = 64696973441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64696973459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634284003 + ... + 634284104.

It is an arithmetic number, because the mean of its divisors is an integer number (11417112972).

Almost surely, 2^64696973457 is an apocalyptic number.

It is an amenable number.

64696973457 is a deficient number, since it is larger than the sum of its proper divisors (26639930319).

64696973457 is a wasteful number, since it uses less digits than its factorization.

64696973457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268568127.

The product of its digits is 205752960, while the sum is 66.

The spelling of 64696973457 in words is "sixty-four billion, six hundred ninety-six million, nine hundred seventy-three thousand, four hundred fifty-seven".