78617306627 has 4 divisors (see below), whose sum is σ = 80742098736. Its totient is φ = 76492514520.

The previous prime is 78617306591. The next prime is 78617306629. The reversal of 78617306627 is 72660371687.

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 78617306627 - 2¹² = 78617302531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78617306629) 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, 1062395999 + ... + 1062396072.

It is an arithmetic number, because the mean of its divisors is an integer number (20185524684).

Almost surely, 2^78617306627 is an apocalyptic number.

78617306627 is a deficient number, since it is larger than the sum of its proper divisors (2124792109).

78617306627 is a wasteful number, since it uses less digits than its factorization.

78617306627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124792108.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 78617306627 in words is "seventy-eight billion, six hundred seventeen million, three hundred six thousand, six hundred twenty-seven".