64391769268 has 12 divisors (see below), whose sum is σ = 115083162432. Its totient is φ = 31510865720.

The previous prime is 64391769229. The next prime is 64391769269. The reversal of 64391769268 is 86296719346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64391769269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171254518 + ... + 171254893.

It is an arithmetic number, because the mean of its divisors is an integer number (9590263536).

Almost surely, 2^64391769268 is an apocalyptic number.

It is an amenable number.

64391769268 is a deficient number, since it is larger than the sum of its proper divisors (50691393164).

64391769268 is a wasteful number, since it uses less digits than its factorization.

64391769268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342509462 (or 342509460 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 61.

The spelling of 64391769268 in words is "sixty-four billion, three hundred ninety-one million, seven hundred sixty-nine thousand, two hundred sixty-eight".