78468646700015 has 192 divisors, whose sum is σ = 123259131509760. Its totient is φ = 47313180794880.

The previous prime is 78468646699999. The next prime is 78468646700089. The reversal of 78468646700015 is 51000764686487.

It is a happy number.

It is not a de Polignac number, because 78468646700015 - 2⁴ = 78468646699999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 458910917 + ... + 459081873.

It is an arithmetic number, because the mean of its divisors is an integer number (641974643280).

Almost surely, 2^{78468646700015} is an apocalyptic number.

78468646700015 is a deficient number, since it is larger than the sum of its proper divisors (44790484809745).

78468646700015 is a wasteful number, since it uses less digits than its factorization.

78468646700015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171154 (or 171141 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 62.

The spelling of 78468646700015 in words is "seventy-eight trillion, four hundred sixty-eight billion, six hundred forty-six million, seven hundred thousand, fifteen".