78353494656495 has 16 divisors (see below), whose sum is σ = 126774193603680. Its totient is φ = 41318996432384.

The previous prime is 78353494656419. The next prime is 78353494656527. The reversal of 78353494656495 is 59465649435387.

It is a cyclic number.

It is not a de Polignac number, because 78353494656495 - 2¹⁵ = 78353494623727 is a prime.

It is a super-2 number, since 2×78353494656495² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78353494656495.

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, 29345876814 + ... + 29345879483.

It is an arithmetic number, because the mean of its divisors is an integer number (7923387100230).

Almost surely, 2^{78353494656495} is an apocalyptic number.

78353494656495 is a deficient number, since it is larger than the sum of its proper divisors (48420698947185).

78353494656495 is a wasteful number, since it uses less digits than its factorization.

78353494656495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58691756394.

The product of its digits is 11757312000, while the sum is 78.

The spelling of 78353494656495 in words is "seventy-eight trillion, three hundred fifty-three billion, four hundred ninety-four million, six hundred fifty-six thousand, four hundred ninety-five".