78587196663364 has 9 divisors (see below), whose sum is σ = 137527625188191. Its totient is φ = 39293589466740.

The previous prime is 78587196663361. The next prime is 78587196663383. The reversal of 78587196663364 is 46336669178587.

The square root of 78587196663364 is 8864942.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78587196663361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15513649 + ... + 19946119.

Almost surely, 2^{78587196663364} is an apocalyptic number.

78587196663364 is the 8864942-nd square number.

It is an amenable number.

78587196663364 is a deficient number, since it is larger than the sum of its proper divisors (58940428524827).

78587196663364 is an frugal number, since it uses more digits than its factorization.

78587196663364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8864946 (or 4432473 counting only the distinct ones).

The product of its digits is 6584094720, while the sum is 79.

The spelling of 78587196663364 in words is "seventy-eight trillion, five hundred eighty-seven billion, one hundred ninety-six million, six hundred sixty-three thousand, three hundred sixty-four".