1380917729889 has 8 divisors (see below), whose sum is σ = 2045804044320. Its totient is φ = 920611819908.

The previous prime is 1380917729869. The next prime is 1380917729903. The reversal of 1380917729889 is 9889277190831.

1380917729889 is a `hidden beast` number, since 1 + 380 + 9 + 17 + 72 + 98 + 89 = 666.

It is not a de Polignac number, because 1380917729889 - 2⁵ = 1380917729857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1380917729869) 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, 25572550527 + ... + 25572550580.

It is an arithmetic number, because the mean of its divisors is an integer number (255725505540).

Almost surely, 2^{1380917729889} is an apocalyptic number.

It is an amenable number.

1380917729889 is a deficient number, since it is larger than the sum of its proper divisors (664886314431).

1380917729889 is an equidigital number, since it uses as much as digits as its factorization.

1380917729889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51145101116 (or 51145101110 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 72.

The spelling of 1380917729889 in words is "one trillion, three hundred eighty billion, nine hundred seventeen million, seven hundred twenty-nine thousand, eight hundred eighty-nine".