78468417184877 has 4 divisors (see below), whose sum is σ = 78488419334400. Its totient is φ = 78448415035356.

The previous prime is 78468417184867. The next prime is 78468417184897. The reversal of 78468417184877 is 77848171486487.

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 a cyclic number.

It is not a de Polignac number, because 78468417184877 - 2⁸ = 78468417184621 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 (78468417184867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10001068877 + ... + 10001076722.

It is an arithmetic number, because the mean of its divisors is an integer number (19622104833600).

Almost surely, 2^{78468417184877} is an apocalyptic number.

It is an amenable number.

78468417184877 is a deficient number, since it is larger than the sum of its proper divisors (20002149523).

78468417184877 is a wasteful number, since it uses less digits than its factorization.

78468417184877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20002149522.

The product of its digits is 3776446464, while the sum is 80.

The spelling of 78468417184877 in words is "seventy-eight trillion, four hundred sixty-eight billion, four hundred seventeen million, one hundred eighty-four thousand, eight hundred seventy-seven".