1366966502640 has 120 divisors (see below), whose sum is σ = 4591173573168. Its totient is φ = 364489113600.

The previous prime is 1366966502633. The next prime is 1366966502677. The reversal of 1366966502640 is 462056696631.

1366966502640 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 96 + 6 + 502 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7824240 + ... + 7997040.

Almost surely, 2^{1366966502640} is an apocalyptic number.

1366966502640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1366966502640 is an abundant number, since it is smaller than the sum of its proper divisors (3224207070528).

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

1366966502640 is a wasteful number, since it uses less digits than its factorization.

1366966502640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183807 (or 183798 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 1366966502640 in words is "one trillion, three hundred sixty-six billion, nine hundred sixty-six million, five hundred two thousand, six hundred forty".