137925997091 has 2 divisors, whose sum is σ = 137925997092. Its totient is φ = 137925997090.

The previous prime is 137925997073. The next prime is 137925997093. The reversal of 137925997091 is 190799529731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137925997091 - 2²⁶ = 137858888227 is a prime.

Together with 137925997093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137925997093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68962998545 + 68962998546.

It is an arithmetic number, because the mean of its divisors is an integer number (68962998546).

Almost surely, 2^137925997091 is an apocalyptic number.

137925997091 is a deficient number, since it is larger than the sum of its proper divisors (1).

137925997091 is an equidigital number, since it uses as much as digits as its factorization.

137925997091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9644670, while the sum is 62.

The spelling of 137925997091 in words is "one hundred thirty-seven billion, nine hundred twenty-five million, nine hundred ninety-seven thousand, ninety-one".