137438953427 has 2 divisors, whose sum is σ = 137438953428. Its totient is φ = 137438953426.

The previous prime is 137438953403. The next prime is 137438953441. The reversal of 137438953427 is 724359834731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137438953427 - 2¹⁶ = 137438887891 is a prime.

It is not a weakly prime, because it can be changed into another prime (137438953447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68719476713 + 68719476714.

It is an arithmetic number, because the mean of its divisors is an integer number (68719476714).

Almost surely, 2^137438953427 is an apocalyptic number.

137438953427 is a deficient number, since it is larger than the sum of its proper divisors (1).

137438953427 is an equidigital number, since it uses as much as digits as its factorization.

137438953427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 56.

The spelling of 137438953427 in words is "one hundred thirty-seven billion, four hundred thirty-eight million, nine hundred fifty-three thousand, four hundred twenty-seven".