64688371801 has 32 divisors (see below), whose sum is σ = 70189037568. Its totient is φ = 59490961920.

The previous prime is 64688371789. The next prime is 64688371837. The reversal of 64688371801 is 10817388646.

It is a cyclic number.

It is not a de Polignac number, because 64688371801 - 2⁹ = 64688371289 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64688371201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14162020 + ... + 14166586.

It is an arithmetic number, because the mean of its divisors is an integer number (2193407424).

Almost surely, 2^64688371801 is an apocalyptic number.

It is an amenable number.

64688371801 is a deficient number, since it is larger than the sum of its proper divisors (5500665767).

64688371801 is a wasteful number, since it uses less digits than its factorization.

64688371801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 64688371801 in words is "sixty-four billion, six hundred eighty-eight million, three hundred seventy-one thousand, eight hundred one".