78458632427 has 8 divisors (see below), whose sum is σ = 90312096000. Its totient is φ = 66766440744.

The previous prime is 78458632393. The next prime is 78458632463. The reversal of 78458632427 is 72423685487.

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

It is a cyclic number.

It is not a de Polignac number, because 78458632427 - 2²⁰ = 78457583851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78458632477) 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, 40316927 + ... + 40318872.

It is an arithmetic number, because the mean of its divisors is an integer number (11289012000).

Almost surely, 2^78458632427 is an apocalyptic number.

78458632427 is a deficient number, since it is larger than the sum of its proper divisors (11853463573).

78458632427 is a wasteful number, since it uses less digits than its factorization.

78458632427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80635945.

The product of its digits is 18063360, while the sum is 56.

The spelling of 78458632427 in words is "seventy-eight billion, four hundred fifty-eight million, six hundred thirty-two thousand, four hundred twenty-seven".