78966552927 has 4 divisors (see below), whose sum is σ = 105288737240. Its totient is φ = 52644368616.

The previous prime is 78966552857. The next prime is 78966552949. The reversal of 78966552927 is 72925566987.

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

It is not a de Polignac number, because 78966552927 - 2¹⁰ = 78966551903 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 (78966552997) 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, 13161092152 + ... + 13161092157.

It is an arithmetic number, because the mean of its divisors is an integer number (26322184310).

Almost surely, 2^78966552927 is an apocalyptic number.

78966552927 is a deficient number, since it is larger than the sum of its proper divisors (26322184313).

78966552927 is a wasteful number, since it uses less digits than its factorization.

78966552927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26322184312.

The product of its digits is 114307200, while the sum is 66.

The spelling of 78966552927 in words is "seventy-eight billion, nine hundred sixty-six million, five hundred fifty-two thousand, nine hundred twenty-seven".