1366070521499 has 4 divisors (see below), whose sum is σ = 1366086137064. Its totient is φ = 1366054905936.

The previous prime is 1366070521471. The next prime is 1366070521511. The reversal of 1366070521499 is 9941250706631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366070521499 is a prime.

It is a super-2 number, since 2×1366070521499² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1366070521499.

It is not an unprimeable number, because it can be changed into a prime (1366070521429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7675817 + ... + 7851770.

It is an arithmetic number, because the mean of its divisors is an integer number (341521534266).

Almost surely, 2^{1366070521499} is an apocalyptic number.

1366070521499 is a deficient number, since it is larger than the sum of its proper divisors (15615565).

1366070521499 is an equidigital number, since it uses as much as digits as its factorization.

1366070521499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15615564.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 1366070521499 in words is "one trillion, three hundred sixty-six billion, seventy million, five hundred twenty-one thousand, four hundred ninety-nine".