137439756233 has 4 divisors (see below), whose sum is σ = 148012045188. Its totient is φ = 126867467280.

The previous prime is 137439756229. The next prime is 137439756263. The reversal of 137439756233 is 332657934731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21265805584 + 116173950649 = 145828^2 + 340843^2 .

It is a cyclic number.

It is not a de Polignac number, because 137439756233 - 2² = 137439756229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137439756263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5286144458 + ... + 5286144483.

It is an arithmetic number, because the mean of its divisors is an integer number (37003011297).

Almost surely, 2^137439756233 is an apocalyptic number.

137439756233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

137439756233 is a deficient number, since it is larger than the sum of its proper divisors (10572288955).

137439756233 is a wasteful number, since it uses less digits than its factorization.

137439756233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10572288954.

The product of its digits is 8573040, while the sum is 53.

The spelling of 137439756233 in words is "one hundred thirty-seven billion, four hundred thirty-nine million, seven hundred fifty-six thousand, two hundred thirty-three".