1366431461808 has 80 divisors (see below), whose sum is σ = 4128045478656. Its totient is φ = 381329706240.

The previous prime is 1366431461803. The next prime is 1366431461827. The reversal of 1366431461808 is 8081641346631.

It is not an unprimeable number, because it can be changed into a prime (1366431461803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47273463 + ... + 47302358.

Almost surely, 2^{1366431461808} is an apocalyptic number.

It is an amenable number.

1366431461808 is an abundant number, since it is smaller than the sum of its proper divisors (2761614016848).

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

1366431461808 is a wasteful number, since it uses less digits than its factorization.

1366431461808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94575882 (or 94575876 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 1366431461808 in words is "one trillion, three hundred sixty-six billion, four hundred thirty-one million, four hundred sixty-one thousand, eight hundred eight".