78768676947 has 4 divisors (see below), whose sum is σ = 105024902600. Its totient is φ = 52512451296.

The previous prime is 78768676927. The next prime is 78768676967. The reversal of 78768676947 is 74967686787.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (78768676927) and next prime (78768676967).

It is not a de Polignac number, because 78768676947 - 2²⁰ = 78767628371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78768676927) 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, 13128112822 + ... + 13128112827.

It is an arithmetic number, because the mean of its divisors is an integer number (26256225650).

Almost surely, 2^78768676947 is an apocalyptic number.

78768676947 is a deficient number, since it is larger than the sum of its proper divisors (26256225653).

78768676947 is a wasteful number, since it uses less digits than its factorization.

78768676947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26256225652.

The product of its digits is 1194891264, while the sum is 75.

The spelling of 78768676947 in words is "seventy-eight billion, seven hundred sixty-eight million, six hundred seventy-six thousand, nine hundred forty-seven".