1246399118857 has 8 divisors (see below), whose sum is σ = 1276225441920. Its totient is φ = 1216913668320.

The previous prime is 1246399118849. The next prime is 1246399118911. The reversal of 1246399118857 is 7588119936421.

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 1246399118857 - 2³ = 1246399118849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1246399118257) 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, 85210732 + ... + 85225357.

It is an arithmetic number, because the mean of its divisors is an integer number (159528180240).

Almost surely, 2^{1246399118857} is an apocalyptic number.

It is an amenable number.

1246399118857 is a deficient number, since it is larger than the sum of its proper divisors (29826323063).

1246399118857 is a wasteful number, since it uses less digits than its factorization.

1246399118857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170436263.

The product of its digits is 26127360, while the sum is 64.

The spelling of 1246399118857 in words is "one trillion, two hundred forty-six billion, three hundred ninety-nine million, one hundred eighteen thousand, eight hundred fifty-seven".