64676939401 has 4 divisors (see below), whose sum is σ = 64703481412. Its totient is φ = 64650397392.

The previous prime is 64676939347. The next prime is 64676939419. The reversal of 64676939401 is 10493967646.

64676939401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25304855625 + 39372083776 = 159075^2 + 198424^2 .

It is a cyclic number.

It is not a de Polignac number, because 64676939401 - 2¹⁹ = 64676415113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64676939441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13267350 + ... + 13272223.

It is an arithmetic number, because the mean of its divisors is an integer number (16175870353).

Almost surely, 2^64676939401 is an apocalyptic number.

It is an amenable number.

64676939401 is a deficient number, since it is larger than the sum of its proper divisors (26542011).

64676939401 is a wasteful number, since it uses less digits than its factorization.

64676939401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26542010.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 64676939401 in words is "sixty-four billion, six hundred seventy-six million, nine hundred thirty-nine thousand, four hundred one".