78465765467047 has 4 divisors (see below), whose sum is σ = 89675160533776. Its totient is φ = 67256370400320.

The previous prime is 78465765467041. The next prime is 78465765467059. The reversal of 78465765467047 is 74076456756487.

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

It is a cyclic number.

It is not a de Polignac number, because 78465765467047 - 2¹⁵ = 78465765434279 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 (78465765467041) 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, 5604697533354 + ... + 5604697533367.

It is an arithmetic number, because the mean of its divisors is an integer number (22418790133444).

Almost surely, 2^{78465765467047} is an apocalyptic number.

78465765467047 is a deficient number, since it is larger than the sum of its proper divisors (11209395066729).

78465765467047 is a wasteful number, since it uses less digits than its factorization.

78465765467047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11209395066728.

The product of its (nonzero) digits is 6638284800, while the sum is 76.

The spelling of 78465765467047 in words is "seventy-eight trillion, four hundred sixty-five billion, seven hundred sixty-five million, four hundred sixty-seven thousand, forty-seven".