78751774752401 has 8 divisors (see below), whose sum is σ = 82388986977024. Its totient is φ = 75196297634080.

The previous prime is 78751774752389. The next prime is 78751774752473. The reversal of 78751774752401 is 10425747715787.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78751774752401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78751774752491) 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, 20433774605 + ... + 20433778458.

It is an arithmetic number, because the mean of its divisors is an integer number (10298623372128).

Almost surely, 2^{78751774752401} is an apocalyptic number.

It is an amenable number.

78751774752401 is a deficient number, since it is larger than the sum of its proper divisors (3637212224623).

78751774752401 is a wasteful number, since it uses less digits than its factorization.

78751774752401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40867553151.

The product of its (nonzero) digits is 107564800, while the sum is 65.

The spelling of 78751774752401 in words is "seventy-eight trillion, seven hundred fifty-one billion, seven hundred seventy-four million, seven hundred fifty-two thousand, four hundred one".