64942749338 has 16 divisors (see below), whose sum is σ = 100686675456. Its totient is φ = 31383235920.

The previous prime is 64942749283. The next prime is 64942749353. The reversal of 64942749338 is 83394724946.

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, 629606 + ... + 725457.

It is an arithmetic number, because the mean of its divisors is an integer number (6292917216).

Almost surely, 2^64942749338 is an apocalyptic number.

64942749338 is a deficient number, since it is larger than the sum of its proper divisors (35743926118).

64942749338 is a wasteful number, since it uses less digits than its factorization.

64942749338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355869.

The product of its digits is 31352832, while the sum is 59.

The spelling of 64942749338 in words is "sixty-four billion, nine hundred forty-two million, seven hundred forty-nine thousand, three hundred thirty-eight".