1387332397499 has 4 divisors (see below), whose sum is σ = 1387367234640. Its totient is φ = 1387297560360.

The previous prime is 1387332397471. The next prime is 1387332397537. The reversal of 1387332397499 is 9947932337831.

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

It is a cyclic number.

It is not a de Polignac number, because 1387332397499 - 2²⁴ = 1387315620283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387332399499) 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, 17358767 + ... + 17438504.

It is an arithmetic number, because the mean of its divisors is an integer number (346841808660).

Almost surely, 2^{1387332397499} is an apocalyptic number.

1387332397499 is a deficient number, since it is larger than the sum of its proper divisors (34837141).

1387332397499 is an equidigital number, since it uses as much as digits as its factorization.

1387332397499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34837140.

The product of its digits is 185177664, while the sum is 68.

The spelling of 1387332397499 in words is "one trillion, three hundred eighty-seven billion, three hundred thirty-two million, three hundred ninety-seven thousand, four hundred ninety-nine".