1366664000621 has 16 divisors (see below), whose sum is σ = 1428565628160. Its totient is φ = 1305813868800.

The previous prime is 1366664000609. The next prime is 1366664000657. The reversal of 1366664000621 is 1260004666631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366664000621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366664000021) 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, 558341 + ... + 1745013.

It is an arithmetic number, because the mean of its divisors is an integer number (89285351760).

Almost surely, 2^{1366664000621} is an apocalyptic number.

It is an amenable number.

1366664000621 is a deficient number, since it is larger than the sum of its proper divisors (61901627539).

1366664000621 is a wasteful number, since it uses less digits than its factorization.

1366664000621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187116.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 1366664000621 in words is "one trillion, three hundred sixty-six billion, six hundred sixty-four million, six hundred twenty-one", and thus it is an aban number.