64974662215 has 8 divisors (see below), whose sum is σ = 78096791808. Its totient is φ = 51894931680.

The previous prime is 64974662147. The next prime is 64974662227. The reversal of 64974662215 is 51226647946.

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

It is not a de Polignac number, because 64974662215 - 2¹⁷ = 64974531143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10596391 + ... + 10602520.

It is an arithmetic number, because the mean of its divisors is an integer number (9762098976).

Almost surely, 2^64974662215 is an apocalyptic number.

64974662215 is a deficient number, since it is larger than the sum of its proper divisors (13122129593).

64974662215 is a wasteful number, since it uses less digits than its factorization.

64974662215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21199529.

The product of its digits is 4354560, while the sum is 52.

The spelling of 64974662215 in words is "sixty-four billion, nine hundred seventy-four million, six hundred sixty-two thousand, two hundred fifteen".