1366689315187 has 8 divisors (see below), whose sum is σ = 1561957122816. Its totient is φ = 1171428126792.

The previous prime is 1366689315163. The next prime is 1366689315197. The reversal of 1366689315187 is 7815139866631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1366689315187 - 2³⁵ = 1332329576819 is a prime.

It is a super-2 number, since 2×1366689315187² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366689315197) 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, 1204183 + ... + 2045344.

It is an arithmetic number, because the mean of its divisors is an integer number (195244640352).

Almost surely, 2^{1366689315187} is an apocalyptic number.

1366689315187 is a deficient number, since it is larger than the sum of its proper divisors (195267807629).

1366689315187 is an equidigital number, since it uses as much as digits as its factorization.

1366689315187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309617.

The product of its digits is 39191040, while the sum is 64.

The spelling of 1366689315187 in words is "one trillion, three hundred sixty-six billion, six hundred eighty-nine million, three hundred fifteen thousand, one hundred eighty-seven".