78427366199 has 16 divisors (see below), whose sum is σ = 97230573888. Its totient is φ = 61599474432.

The previous prime is 78427366183. The next prime is 78427366327. The reversal of 78427366199 is 99166372487.

It is a cyclic number.

It is not a de Polignac number, because 78427366199 - 2⁴ = 78427366183 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78427366159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3132932 + ... + 3157865.

It is an arithmetic number, because the mean of its divisors is an integer number (6076910868).

Almost surely, 2^78427366199 is an apocalyptic number.

78427366199 is a deficient number, since it is larger than the sum of its proper divisors (18803207689).

78427366199 is a wasteful number, since it uses less digits than its factorization.

78427366199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6290954.

The product of its digits is 27433728, while the sum is 62.

The spelling of 78427366199 in words is "seventy-eight billion, four hundred twenty-seven million, three hundred sixty-six thousand, one hundred ninety-nine".