78317404414251 has 8 divisors (see below), whose sum is σ = 104423967098880. Its totient is φ = 52211222336232.

The previous prime is 78317404414169. The next prime is 78317404414303. The reversal of 78317404414251 is 15241440471387.

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

It is not a de Polignac number, because 78317404414251 - 2¹⁷ = 78317404283179 is a prime.

It is a super-2 number, since 2×78317404414251² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78317404414194 and 78317404414203.

It is not an unprimeable number, because it can be changed into a prime (78317404414451) 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, 94671175 + ... + 95494848.

It is an arithmetic number, because the mean of its divisors is an integer number (13052995887360).

Almost surely, 2^{78317404414251} is an apocalyptic number.

78317404414251 is a deficient number, since it is larger than the sum of its proper divisors (26106562684629).

78317404414251 is a wasteful number, since it uses less digits than its factorization.

78317404414251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190303305.

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 78317404414251 in words is "seventy-eight trillion, three hundred seventeen billion, four hundred four million, four hundred fourteen thousand, two hundred fifty-one".