1296912279718 has 8 divisors (see below), whose sum is σ = 2122220094120. Its totient is φ = 589505581680.

The previous prime is 1296912279679. The next prime is 1296912279737. The reversal of 1296912279718 is 8179722196921.

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

It is a super-2 number, since 2×1296912279718² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1296912279718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29475279063 + ... + 29475279106.

It is an arithmetic number, because the mean of its divisors is an integer number (265277511765).

Almost surely, 2^{1296912279718} is an apocalyptic number.

1296912279718 is a deficient number, since it is larger than the sum of its proper divisors (825307814402).

1296912279718 is a wasteful number, since it uses less digits than its factorization.

1296912279718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58950558182.

The product of its digits is 13716864, while the sum is 64.

The spelling of 1296912279718 in words is "one trillion, two hundred ninety-six billion, nine hundred twelve million, two hundred seventy-nine thousand, seven hundred eighteen".