78519913132813 has 8 divisors (see below), whose sum is σ = 79246077728256. Its totient is φ = 77794297627200.

The previous prime is 78519913132811. The next prime is 78519913132853. The reversal of 78519913132813 is 31823131991587.

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

It is a cyclic number.

It is not a de Polignac number, because 78519913132813 - 2¹ = 78519913132811 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 (78519913132811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136985133 + ... + 137557138.

It is an arithmetic number, because the mean of its divisors is an integer number (9905759716032).

Almost surely, 2^{78519913132813} is an apocalyptic number.

It is an amenable number.

78519913132813 is a deficient number, since it is larger than the sum of its proper divisors (726164595443).

78519913132813 is a wasteful number, since it uses less digits than its factorization.

78519913132813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274544915.

The product of its digits is 9797760, while the sum is 61.

The spelling of 78519913132813 in words is "seventy-eight trillion, five hundred nineteen billion, nine hundred thirteen million, one hundred thirty-two thousand, eight hundred thirteen".