78564826702351 has 16 divisors (see below), whose sum is σ = 89438588605440. Its totient is φ = 68313337148320.

The previous prime is 78564826702321. The next prime is 78564826702357. The reversal of 78564826702351 is 15320762846587.

It is not a de Polignac number, because 78564826702351 - 2¹⁵ = 78564826669583 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 (78564826702357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4430440 + ... + 13295053.

It is an arithmetic number, because the mean of its divisors is an integer number (5589911787840).

Almost surely, 2^{78564826702351} is an apocalyptic number.

78564826702351 is a deficient number, since it is larger than the sum of its proper divisors (10873761903089).

78564826702351 is a wasteful number, since it uses less digits than its factorization.

78564826702351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17743046.

The product of its (nonzero) digits is 135475200, while the sum is 64.

The spelling of 78564826702351 in words is "seventy-eight trillion, five hundred sixty-four billion, eight hundred twenty-six million, seven hundred two thousand, three hundred fifty-one".