78786235347 has 4 divisors (see below), whose sum is σ = 105048313800. Its totient is φ = 52524156896.

The previous prime is 78786235343. The next prime is 78786235349. The reversal of 78786235347 is 74353268787.

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 78786235347 - 2² = 78786235343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78786235343) 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, 13131039222 + ... + 13131039227.

It is an arithmetic number, because the mean of its divisors is an integer number (26262078450).

Almost surely, 2^78786235347 is an apocalyptic number.

78786235347 is a deficient number, since it is larger than the sum of its proper divisors (26262078453).

78786235347 is a wasteful number, since it uses less digits than its factorization.

78786235347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26262078452.

The product of its digits is 47416320, while the sum is 60.

The spelling of 78786235347 in words is "seventy-eight billion, seven hundred eighty-six million, two hundred thirty-five thousand, three hundred forty-seven".