12851643057 has 8 divisors (see below), whose sum is σ = 18693299040. Its totient is φ = 7788874560.

The previous prime is 12851643031. The next prime is 12851643089. The reversal of 12851643057 is 75034615821.

It is a happy number.

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

It is not a de Polignac number, because 12851643057 - 2¹¹ = 12851641009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12851643457) 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, 194721832 + ... + 194721897.

It is an arithmetic number, because the mean of its divisors is an integer number (2336662380).

Almost surely, 2^12851643057 is an apocalyptic number.

It is an amenable number.

12851643057 is a deficient number, since it is larger than the sum of its proper divisors (5841655983).

12851643057 is a wasteful number, since it uses less digits than its factorization.

12851643057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389443743.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 12851643057 in words is "twelve billion, eight hundred fifty-one million, six hundred forty-three thousand, fifty-seven".