137256261238 has 16 divisors (see below), whose sum is σ = 211900368384. Its totient is φ = 66651658920.

The previous prime is 137256261221. The next prime is 137256261239. The reversal of 137256261238 is 832162652731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137256261239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7203870 + ... + 7222897.

It is an arithmetic number, because the mean of its divisors is an integer number (13243773024).

Almost surely, 2^137256261238 is an apocalyptic number.

137256261238 is a deficient number, since it is larger than the sum of its proper divisors (74644107146).

137256261238 is a wasteful number, since it uses less digits than its factorization.

137256261238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14426907.

The product of its digits is 725760, while the sum is 46.

The spelling of 137256261238 in words is "one hundred thirty-seven billion, two hundred fifty-six million, two hundred sixty-one thousand, two hundred thirty-eight".