64798194215 has 16 divisors (see below), whose sum is σ = 78284400480. Its totient is φ = 51488194560.

The previous prime is 64798194169. The next prime is 64798194247. The reversal of 64798194215 is 51249189746.

It is not a de Polignac number, because 64798194215 - 2¹⁶ = 64798128679 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 724775 + ... + 809255.

It is an arithmetic number, because the mean of its divisors is an integer number (4892775030).

Almost surely, 2^64798194215 is an apocalyptic number.

64798194215 is a deficient number, since it is larger than the sum of its proper divisors (13486206265).

64798194215 is a wasteful number, since it uses less digits than its factorization.

64798194215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85522.

The product of its digits is 4354560, while the sum is 56.

The spelling of 64798194215 in words is "sixty-four billion, seven hundred ninety-eight million, one hundred ninety-four thousand, two hundred fifteen".