64001318868761 has 4 divisors (see below), whose sum is σ = 64001414580432. Its totient is φ = 64001223157092.

The previous prime is 64001318868757. The next prime is 64001318868829. The reversal of 64001318868761 is 16786881310046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64001318868761 - 2² = 64001318868757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64001318868761.

It is not an unprimeable number, because it can be changed into a prime (64001318868061) 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, 46845695 + ... + 48192548.

It is an arithmetic number, because the mean of its divisors is an integer number (16000353645108).

Almost surely, 2^{64001318868761} is an apocalyptic number.

It is an amenable number.

64001318868761 is a deficient number, since it is larger than the sum of its proper divisors (95711671).

64001318868761 is an equidigital number, since it uses as much as digits as its factorization.

64001318868761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95711670.

The product of its (nonzero) digits is 9289728, while the sum is 59.

The spelling of 64001318868761 in words is "sixty-four trillion, one billion, three hundred eighteen million, eight hundred sixty-eight thousand, seven hundred sixty-one".