78468136584501 has 4 divisors (see below), whose sum is σ = 104624182112672. Its totient is φ = 52312091056332.

The previous prime is 78468136584421. The next prime is 78468136584521. The reversal of 78468136584501 is 10548563186487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 78468136584501 - 2²¹ = 78468134487349 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 (78468136584521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13078022764081 + ... + 13078022764086.

It is an arithmetic number, because the mean of its divisors is an integer number (26156045528168).

Almost surely, 2^{78468136584501} is an apocalyptic number.

It is an amenable number.

78468136584501 is a deficient number, since it is larger than the sum of its proper divisors (26156045528171).

78468136584501 is a wasteful number, since it uses less digits than its factorization.

78468136584501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26156045528170.

The product of its (nonzero) digits is 154828800, while the sum is 66.

The spelling of 78468136584501 in words is "seventy-eight trillion, four hundred sixty-eight billion, one hundred thirty-six million, five hundred eighty-four thousand, five hundred one".