64047319915 has 8 divisors (see below), whose sum is σ = 76884717888. Its totient is φ = 51219233280.

The previous prime is 64047319913. The next prime is 64047319937. The reversal of 64047319915 is 51991374046.

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

It is not a de Polignac number, because 64047319915 - 2¹ = 64047319913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64047319913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2312691 + ... + 2340220.

It is an arithmetic number, because the mean of its divisors is an integer number (9610589736).

Almost surely, 2^64047319915 is an apocalyptic number.

64047319915 is a deficient number, since it is larger than the sum of its proper divisors (12837397973).

64047319915 is a wasteful number, since it uses less digits than its factorization.

64047319915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4655669.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 64047319915 in words is "sixty-four billion, forty-seven million, three hundred nineteen thousand, nine hundred fifteen".