1366606394664 has 32 divisors (see below), whose sum is σ = 3904589699520. Its totient is φ = 390458969856.

The previous prime is 1366606394651. The next prime is 1366606394677. The reversal of 1366606394664 is 4664936066631.

It is an interprime number because it is at equal distance from previous prime (1366606394651) and next prime (1366606394677).

It is a super-2 number, since 2×1366606394664² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1366606394598 and 1366606394607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4067280769 + ... + 4067281104.

It is an arithmetic number, because the mean of its divisors is an integer number (122018428110).

Almost surely, 2^{1366606394664} is an apocalyptic number.

1366606394664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1366606394664 is an abundant number, since it is smaller than the sum of its proper divisors (2537983304856).

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

1366606394664 is a wasteful number, since it uses less digits than its factorization.

1366606394664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8134561889 (or 8134561885 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 60.

The spelling of 1366606394664 in words is "one trillion, three hundred sixty-six billion, six hundred six million, three hundred ninety-four thousand, six hundred sixty-four".