64718881746 has 32 divisors (see below), whose sum is σ = 136267185600. Its totient is φ = 20435005440.

The previous prime is 64718881709. The next prime is 64718881769.

64718881746 is nontrivially palindromic in base 10.

64718881746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64718881746.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1027450 + ... + 1088618.

It is an arithmetic number, because the mean of its divisors is an integer number (4258349550).

Almost surely, 2^64718881746 is an apocalyptic number.

64718881746 is an abundant number, since it is smaller than the sum of its proper divisors (71548303854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64718881746 is a wasteful number, since it uses less digits than its factorization.

64718881746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70474.

The product of its digits is 14450688, while the sum is 60.

The spelling of 64718881746 in words is "sixty-four billion, seven hundred eighteen million, eight hundred eighty-one thousand, seven hundred forty-six".