1397662103639 has 4 divisors (see below), whose sum is σ = 1397667119424. Its totient is φ = 1397657087856.

The previous prime is 1397662103597. The next prime is 1397662103647. The reversal of 1397662103639 is 9363012667931.

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 1397662103639 - 2²⁸ = 1397393668183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397662103039) 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, 2063687 + ... + 2655960.

It is an arithmetic number, because the mean of its divisors is an integer number (349416779856).

Almost surely, 2^{1397662103639} is an apocalyptic number.

1397662103639 is a deficient number, since it is larger than the sum of its proper divisors (5015785).

1397662103639 is an equidigital number, since it uses as much as digits as its factorization.

1397662103639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015784.

The product of its (nonzero) digits is 6613488, while the sum is 56.

The spelling of 1397662103639 in words is "one trillion, three hundred ninety-seven billion, six hundred sixty-two million, one hundred three thousand, six hundred thirty-nine".