366643421811 has 8 divisors (see below), whose sum is σ = 543175439760. Its totient is φ = 244428947856.

The previous prime is 366643421791. The next prime is 366643421813. The reversal of 366643421811 is 118124346663.

It is a de Polignac number, because none of the positive numbers 2^k-366643421811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (366643421813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6789692970 + ... + 6789693023.

It is an arithmetic number, because the mean of its divisors is an integer number (67896929970).

Almost surely, 2^366643421811 is an apocalyptic number.

366643421811 is a deficient number, since it is larger than the sum of its proper divisors (176532017949).

366643421811 is a wasteful number, since it uses less digits than its factorization.

366643421811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13579386002 (or 13579385996 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The spelling of 366643421811 in words is "three hundred sixty-six billion, six hundred forty-three million, four hundred twenty-one thousand, eight hundred eleven".