345723726137 has 2 divisors, whose sum is σ = 345723726138. Its totient is φ = 345723726136.

The previous prime is 345723726109. The next prime is 345723726149. The reversal of 345723726137 is 731627327543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247271485696 + 98452240441 = 497264^2 + 313771^2 .

It is a cyclic number.

It is not a de Polignac number, because 345723726137 - 2²⁰ = 345722677561 is a prime.

It is not a weakly prime, because it can be changed into another prime (345723726157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172861863068 + 172861863069.

It is an arithmetic number, because the mean of its divisors is an integer number (172861863069).

Almost surely, 2^345723726137 is an apocalyptic number.

It is an amenable number.

345723726137 is a deficient number, since it is larger than the sum of its proper divisors (1).

345723726137 is an equidigital number, since it uses as much as digits as its factorization.

345723726137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4445280, while the sum is 50.

The spelling of 345723726137 in words is "three hundred forty-five billion, seven hundred twenty-three million, seven hundred twenty-six thousand, one hundred thirty-seven".