78779587713 has 8 divisors (see below), whose sum is σ = 108427819776. Its totient is φ = 50825540400.

The previous prime is 78779587693. The next prime is 78779587753. The reversal of 78779587713 is 31778597787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78779587713 - 2²² = 78775393409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78779587753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423546078 + ... + 423546263.

It is an arithmetic number, because the mean of its divisors is an integer number (13553477472).

Almost surely, 2^78779587713 is an apocalyptic number.

It is an amenable number.

78779587713 is a deficient number, since it is larger than the sum of its proper divisors (29648232063).

78779587713 is a wasteful number, since it uses less digits than its factorization.

78779587713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847092375.

The product of its digits is 145212480, while the sum is 69.

The spelling of 78779587713 in words is "seventy-eight billion, seven hundred seventy-nine million, five hundred eighty-seven thousand, seven hundred thirteen".