345518573437 has 2 divisors, whose sum is σ = 345518573438. Its totient is φ = 345518573436.

The previous prime is 345518573339. The next prime is 345518573441. The reversal of 345518573437 is 734375815543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285149592036 + 60368981401 = 533994^2 + 245701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345518573437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345518573137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172759286718 + 172759286719.

It is an arithmetic number, because the mean of its divisors is an integer number (172759286719).

Almost surely, 2^345518573437 is an apocalyptic number.

It is an amenable number.

345518573437 is a deficient number, since it is larger than the sum of its proper divisors (1).

345518573437 is an equidigital number, since it uses as much as digits as its factorization.

345518573437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168000, while the sum is 55.

The spelling of 345518573437 in words is "three hundred forty-five billion, five hundred eighteen million, five hundred seventy-three thousand, four hundred thirty-seven".