78600744889 has 4 divisors (see below), whose sum is σ = 78814916224. Its totient is φ = 78386573556.

The previous prime is 78600744883. The next prime is 78600744979. The reversal of 78600744889 is 98844700687.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98844700687 = 106751 ⋅925937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78600744889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78600744883) 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, 107085117 + ... + 107085850.

It is an arithmetic number, because the mean of its divisors is an integer number (19703729056).

Almost surely, 2^78600744889 is an apocalyptic number.

It is an amenable number.

78600744889 is a deficient number, since it is larger than the sum of its proper divisors (214171335).

78600744889 is a wasteful number, since it uses less digits than its factorization.

78600744889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214171334.

The product of its (nonzero) digits is 21676032, while the sum is 61.

The spelling of 78600744889 in words is "seventy-eight billion, six hundred million, seven hundred forty-four thousand, eight hundred eighty-nine".