1381359671999 has 8 divisors (see below), whose sum is σ = 1400295960000. Its totient is φ = 1362499281792.

The previous prime is 1381359671977. The next prime is 1381359672037. The reversal of 1381359671999 is 9991769531831.

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

It is a cyclic number.

It is not a de Polignac number, because 1381359671999 - 2²⁸ = 1381091236543 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 (1381359671929) 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, 18937799 + ... + 19010600.

It is an arithmetic number, because the mean of its divisors is an integer number (175036995000).

Almost surely, 2^{1381359671999} is an apocalyptic number.

1381359671999 is a deficient number, since it is larger than the sum of its proper divisors (18936288001).

1381359671999 is an equidigital number, since it uses as much as digits as its factorization.

1381359671999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37948897.

The product of its digits is 99202320, while the sum is 71.

The spelling of 1381359671999 in words is "one trillion, three hundred eighty-one billion, three hundred fifty-nine million, six hundred seventy-one thousand, nine hundred ninety-nine".