12858780989 has 8 divisors (see below), whose sum is σ = 13312875000. Its totient is φ = 12405399552.

The previous prime is 12858780973. The next prime is 12858781043. The reversal of 12858780989 is 98908785821.

It can be written as a sum of positive squares in 4 ways, for example, as 177768889 + 12681012100 = 13333^2 + 112610^2 .

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 12858780989 - 2⁴ = 12858780973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12858780589) 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, 141284 + ... + 213725.

It is an arithmetic number, because the mean of its divisors is an integer number (1664109375).

Almost surely, 2^12858780989 is an apocalyptic number.

It is an amenable number.

12858780989 is a deficient number, since it is larger than the sum of its proper divisors (454094011).

12858780989 is a wasteful number, since it uses less digits than its factorization.

12858780989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356287.

The product of its (nonzero) digits is 23224320, while the sum is 65.

The spelling of 12858780989 in words is "twelve billion, eight hundred fifty-eight million, seven hundred eighty thousand, nine hundred eighty-nine".