64649146708 has 6 divisors (see below), whose sum is σ = 113136006746. Its totient is φ = 32324573352.

The previous prime is 64649146663. The next prime is 64649146777. The reversal of 64649146708 is 80764194646.

64649146708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 62469003844 + 2180142864 = 249938^2 + 46692^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8081143335 + ... + 8081143342.

Almost surely, 2^64649146708 is an apocalyptic number.

It is an amenable number.

64649146708 is a deficient number, since it is larger than the sum of its proper divisors (48486860038).

64649146708 is a wasteful number, since it uses less digits than its factorization.

64649146708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16162286681 (or 16162286679 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 64649146708 in words is "sixty-four billion, six hundred forty-nine million, one hundred forty-six thousand, seven hundred eight".