345500032403521 has 2 divisors, whose sum is σ = 345500032403522. Its totient is φ = 345500032403520.

The previous prime is 345500032403483. The next prime is 345500032403587. The reversal of 345500032403521 is 125304230005543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304234003713025 + 41266028690496 = 17442305^2 + 6423864^2 .

It is a cyclic number.

It is not a de Polignac number, because 345500032403521 - 2³³ = 345491442468929 is a prime.

It is not a weakly prime, because it can be changed into another prime (345500032403621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172750016201760 + 172750016201761.

It is an arithmetic number, because the mean of its divisors is an integer number (172750016201761).

Almost surely, 2^{345500032403521} is an apocalyptic number.

It is an amenable number.

345500032403521 is a deficient number, since it is larger than the sum of its proper divisors (1).

345500032403521 is an equidigital number, since it uses as much as digits as its factorization.

345500032403521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 37.

The spelling of 345500032403521 in words is "three hundred forty-five trillion, five hundred billion, thirty-two million, four hundred three thousand, five hundred twenty-one".