64380763699 has 16 divisors (see below), whose sum is σ = 80419239936. Its totient is φ = 50262019200.

The previous prime is 64380763691. The next prime is 64380763703. The reversal of 64380763699 is 99636708346.

It is a cyclic number.

It is not a de Polignac number, because 64380763699 - 2³ = 64380763691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64380763691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8722357 + ... + 8729734.

It is an arithmetic number, because the mean of its divisors is an integer number (5026202496).

Almost surely, 2^64380763699 is an apocalyptic number.

64380763699 is a deficient number, since it is larger than the sum of its proper divisors (16038476237).

64380763699 is a wasteful number, since it uses less digits than its factorization.

64380763699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17452146.

The product of its (nonzero) digits is 35271936, while the sum is 61.

The spelling of 64380763699 in words is "sixty-four billion, three hundred eighty million, seven hundred sixty-three thousand, six hundred ninety-nine".