1366421286652 has 24 divisors (see below), whose sum is σ = 2421178905600. Its totient is φ = 674692840176.

The previous prime is 1366421286649. The next prime is 1366421286653. The reversal of 1366421286652 is 2566821246631.

It is a self number, because there is not a number n which added to its sum of digits gives 1366421286652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366421286653) 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, 4471252 + ... + 4767067.

It is an arithmetic number, because the mean of its divisors is an integer number (100882454400).

Almost surely, 2^{1366421286652} is an apocalyptic number.

It is an amenable number.

1366421286652 is a deficient number, since it is larger than the sum of its proper divisors (1054757618948).

1366421286652 is a wasteful number, since it uses less digits than its factorization.

1366421286652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9238785 (or 9238783 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 52.

The spelling of 1366421286652 in words is "one trillion, three hundred sixty-six billion, four hundred twenty-one million, two hundred eighty-six thousand, six hundred fifty-two".