64393938332 has 12 divisors (see below), whose sum is σ = 112973247240. Its totient is φ = 32115867696.

The previous prime is 64393938317. The next prime is 64393938353. The reversal of 64393938332 is 23383939346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20273582 + ... + 20276757.

It is an arithmetic number, because the mean of its divisors is an integer number (9414437270).

Almost surely, 2^64393938332 is an apocalyptic number.

It is an amenable number.

64393938332 is a deficient number, since it is larger than the sum of its proper divisors (48579308908).

64393938332 is a wasteful number, since it uses less digits than its factorization.

64393938332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40550740 (or 40550738 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 53.

The spelling of 64393938332 in words is "sixty-four billion, three hundred ninety-three million, nine hundred thirty-eight thousand, three hundred thirty-two".