64666788046 has 16 divisors (see below), whose sum is σ = 112000212576. Its totient is φ = 27428622336.

The previous prime is 64666788037. The next prime is 64666788071. The reversal of 64666788046 is 64088766646.

64666788046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23808211 + ... + 23810926.

It is an arithmetic number, because the mean of its divisors is an integer number (7000013286).

Almost surely, 2^64666788046 is an apocalyptic number.

64666788046 is a deficient number, since it is larger than the sum of its proper divisors (47333424530).

64666788046 is a wasteful number, since it uses less digits than its factorization.

64666788046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47619243.

The product of its (nonzero) digits is 55738368, while the sum is 61.

The spelling of 64666788046 in words is "sixty-four billion, six hundred sixty-six million, seven hundred eighty-eight thousand, forty-six".