64763338685701 has 4 divisors (see below), whose sum is σ = 66996557261100. Its totient is φ = 62530120110304.

The previous prime is 64763338685687. The next prime is 64763338685707. The reversal of 64763338685701 is 10758683336746.

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 14222628264100 + 50540710421601 = 3771290^2 + 7109199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64763338685701 is a prime.

It is a super-2 number, since 2×64763338685701² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64763338685707) 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, 1116609287656 + ... + 1116609287713.

It is an arithmetic number, because the mean of its divisors is an integer number (16749139315275).

Almost surely, 2^{64763338685701} is an apocalyptic number.

It is an amenable number.

64763338685701 is a deficient number, since it is larger than the sum of its proper divisors (2233218575399).

64763338685701 is a wasteful number, since it uses less digits than its factorization.

64763338685701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233218575398.

The product of its (nonzero) digits is 365783040, while the sum is 67.

The spelling of 64763338685701 in words is "sixty-four trillion, seven hundred sixty-three billion, three hundred thirty-eight million, six hundred eighty-five thousand, seven hundred one".