345543444421951 has 2 divisors, whose sum is σ = 345543444421952. Its totient is φ = 345543444421950.

The previous prime is 345543444421921. The next prime is 345543444422129. The reversal of 345543444421951 is 159124444345543.

It is a weak prime.

It is an emirp because it is prime and its reverse (159124444345543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345543444421951 - 2⁴³ = 336747351399743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345543444421921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172771722210975 + 172771722210976.

It is an arithmetic number, because the mean of its divisors is an integer number (172771722210976).

Almost surely, 2^{345543444421951} is an apocalyptic number.

345543444421951 is a deficient number, since it is larger than the sum of its proper divisors (1).

345543444421951 is an equidigital number, since it uses as much as digits as its factorization.

345543444421951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944000, while the sum is 58.

The spelling of 345543444421951 in words is "three hundred forty-five trillion, five hundred forty-three billion, four hundred forty-four million, four hundred twenty-one thousand, nine hundred fifty-one".