137727387985727 has 2 divisors, whose sum is σ = 137727387985728. Its totient is φ = 137727387985726.

The previous prime is 137727387985723. The next prime is 137727387985729. The reversal of 137727387985727 is 727589783727731.

It is a strong prime.

It is an emirp because it is prime and its reverse (727589783727731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137727387985727 - 2² = 137727387985723 is a prime.

Together with 137727387985729, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137727387985723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68863693992863 + 68863693992864.

It is an arithmetic number, because the mean of its divisors is an integer number (68863693992864).

Almost surely, 2^{137727387985727} is an apocalyptic number.

137727387985727 is a deficient number, since it is larger than the sum of its proper divisors (1).

137727387985727 is an equidigital number, since it uses as much as digits as its factorization.

137727387985727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12197848320, while the sum is 83.

The spelling of 137727387985727 in words is "one hundred thirty-seven trillion, seven hundred twenty-seven billion, three hundred eighty-seven million, nine hundred eighty-five thousand, seven hundred twenty-seven".