78194125063217 has 8 divisors (see below), whose sum is σ = 78479413653216. Its totient is φ = 77909354710272.

The previous prime is 78194125063199. The next prime is 78194125063231. The reversal of 78194125063217 is 71236052149187.

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 78194125063217 - 2¹² = 78194125059121 is a prime.

It is a super-2 number, since 2×78194125063217² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78194125063247) 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, 129256943 + ... + 129860484.

It is an arithmetic number, because the mean of its divisors is an integer number (9809926706652).

It is a 1-persistent number, because it is pandigital, but 2⋅78194125063217 = 156388250126434 is not.

Almost surely, 2^{78194125063217} is an apocalyptic number.

It is an amenable number.

78194125063217 is a deficient number, since it is larger than the sum of its proper divisors (285288589999).

78194125063217 is a wasteful number, since it uses less digits than its factorization.

78194125063217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259118527.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 78194125063217 in words is "seventy-eight trillion, one hundred ninety-four billion, one hundred twenty-five million, sixty-three thousand, two hundred seventeen".