64943634946 has 16 divisors (see below), whose sum is σ = 104929970688. Its totient is φ = 30058063200.

The previous prime is 64943634941. The next prime is 64943634961.

64943634946 is nontrivially palindromic in base 10.

64943634946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64943634941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22769835 + ... + 22772686.

It is an arithmetic number, because the mean of its divisors is an integer number (6558123168).

Almost surely, 2^64943634946 is an apocalyptic number.

64943634946 is a deficient number, since it is larger than the sum of its proper divisors (39986335742).

64943634946 is a wasteful number, since it uses less digits than its factorization.

64943634946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45542577.

The product of its digits is 40310784, while the sum is 58.

The spelling of 64943634946 in words is "sixty-four billion, nine hundred forty-three million, six hundred thirty-four thousand, nine hundred forty-six".