78887245209 has 8 divisors (see below), whose sum is σ = 105185847072. Its totient is φ = 52590070080.

The previous prime is 78887245183. The next prime is 78887245211. The reversal of 78887245209 is 90254278887.

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

It is not a de Polignac number, because 78887245209 - 2¹⁵ = 78887212441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78887245609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220207 + ... + 454164.

It is an arithmetic number, because the mean of its divisors is an integer number (13148230884).

Almost surely, 2^78887245209 is an apocalyptic number.

It is an amenable number.

78887245209 is a deficient number, since it is larger than the sum of its proper divisors (26298601863).

78887245209 is a wasteful number, since it uses less digits than its factorization.

78887245209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713367.

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 78887245209 in words is "seventy-eight billion, eight hundred eighty-seven million, two hundred forty-five thousand, two hundred nine".