64349507399 has 8 divisors (see below), whose sum is σ = 66583645920. Its totient is φ = 62116381600.

The previous prime is 64349507389. The next prime is 64349507413. The reversal of 64349507399 is 99370594346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64349507399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64349507309) 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 7 ways as a sum of consecutive naturals, for example, 122747 + ... + 379164.

It is an arithmetic number, because the mean of its divisors is an integer number (8322955740).

Almost surely, 2^64349507399 is an apocalyptic number.

64349507399 is a deficient number, since it is larger than the sum of its proper divisors (2234138521).

64349507399 is a wasteful number, since it uses less digits than its factorization.

64349507399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506361.

The product of its (nonzero) digits is 22044960, while the sum is 59.

The spelling of 64349507399 in words is "sixty-four billion, three hundred forty-nine million, five hundred seven thousand, three hundred ninety-nine".