78613216265 has 8 divisors (see below), whose sum is σ = 94639192128. Its totient is φ = 62688351280.

The previous prime is 78613216261. The next prime is 78613216309. The reversal of 78613216265 is 56261231687.

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

It is not a de Polignac number, because 78613216265 - 2² = 78613216261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78613216261) 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, 25276007 + ... + 25279116.

It is an arithmetic number, because the mean of its divisors is an integer number (11829899016).

Almost surely, 2^78613216265 is an apocalyptic number.

It is an amenable number.

78613216265 is a deficient number, since it is larger than the sum of its proper divisors (16025975863).

78613216265 is a wasteful number, since it uses less digits than its factorization.

78613216265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50555439.

The product of its digits is 725760, while the sum is 47.

The spelling of 78613216265 in words is "seventy-eight billion, six hundred thirteen million, two hundred sixteen thousand, two hundred sixty-five".