78579428587 has 8 divisors (see below), whose sum is σ = 88488271872. Its totient is φ = 69131461800.

The previous prime is 78579428573. The next prime is 78579428591. The reversal of 78579428587 is 78582497587.

It is a happy number.

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 78579428587 - 2¹⁵ = 78579395819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78579428387) 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, 115218763 + ... + 115219444.

It is an arithmetic number, because the mean of its divisors is an integer number (11061033984).

Almost surely, 2^78579428587 is an apocalyptic number.

78579428587 is a deficient number, since it is larger than the sum of its proper divisors (9908843285).

78579428587 is a wasteful number, since it uses less digits than its factorization.

78579428587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230438249.

The product of its digits is 316108800, while the sum is 70.

The spelling of 78579428587 in words is "seventy-eight billion, five hundred seventy-nine million, four hundred twenty-eight thousand, five hundred eighty-seven".