345545583523691 has 2 divisors, whose sum is σ = 345545583523692. Its totient is φ = 345545583523690.

The previous prime is 345545583523681. The next prime is 345545583523709. The reversal of 345545583523691 is 196325385545543.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345545583523691 is a prime.

It is a super-2 number, since 2×345545583523691² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (345545583523601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172772791761845 + 172772791761846.

It is an arithmetic number, because the mean of its divisors is an integer number (172772791761846).

Almost surely, 2^{345545583523691} is an apocalyptic number.

345545583523691 is a deficient number, since it is larger than the sum of its proper divisors (1).

345545583523691 is an equidigital number, since it uses as much as digits as its factorization.

345545583523691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400000, while the sum is 68.

The spelling of 345545583523691 in words is "three hundred forty-five trillion, five hundred forty-five billion, five hundred eighty-three million, five hundred twenty-three thousand, six hundred ninety-one".