137269261385 has 4 divisors (see below), whose sum is σ = 164723113668. Its totient is φ = 109815409104.

The previous prime is 137269261379. The next prime is 137269261387. The reversal of 137269261385 is 583162962731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583162962731 = 463 ⋅1259531237.

It can be written as a sum of positive squares in 2 ways, for example, as 37547200441 + 99722060944 = 193771^2 + 315788^2 .

It is a cyclic number.

It is not a de Polignac number, because 137269261385 - 2³⁶ = 68549784649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137269261387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13726926134 + ... + 13726926143.

It is an arithmetic number, because the mean of its divisors is an integer number (41180778417).

Almost surely, 2^137269261385 is an apocalyptic number.

It is an amenable number.

137269261385 is a deficient number, since it is larger than the sum of its proper divisors (27453852283).

137269261385 is an equidigital number, since it uses as much as digits as its factorization.

137269261385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27453852282.

The product of its digits is 3265920, while the sum is 53.

The spelling of 137269261385 in words is "one hundred thirty-seven billion, two hundred sixty-nine million, two hundred sixty-one thousand, three hundred eighty-five".