1297668475218 has 32 divisors (see below), whose sum is σ = 2605350585600. Its totient is φ = 430887755520.

The previous prime is 1297668475193. The next prime is 1297668475231. The reversal of 1297668475218 is 8125748667921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10110108 + ... + 10237656.

It is an arithmetic number, because the mean of its divisors is an integer number (81417205800).

Almost surely, 2^{1297668475218} is an apocalyptic number.

1297668475218 is an abundant number, since it is smaller than the sum of its proper divisors (1307682110382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297668475218 is a wasteful number, since it uses less digits than its factorization.

1297668475218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134082.

The product of its digits is 81285120, while the sum is 66.

The spelling of 1297668475218 in words is "one trillion, two hundred ninety-seven billion, six hundred sixty-eight million, four hundred seventy-five thousand, two hundred eighteen".