345262261361 has 2 divisors, whose sum is σ = 345262261362. Its totient is φ = 345262261360.

The previous prime is 345262261301. The next prime is 345262261381. The reversal of 345262261361 is 163162262543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207644262400 + 137617998961 = 455680^2 + 370969^2 .

It is a cyclic number.

It is not a de Polignac number, because 345262261361 - 2¹⁰ = 345262260337 is a prime.

It is a super-2 number, since 2×345262261361² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (345262261301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172631130680 + 172631130681.

It is an arithmetic number, because the mean of its divisors is an integer number (172631130681).

Almost surely, 2^345262261361 is an apocalyptic number.

It is an amenable number.

345262261361 is a deficient number, since it is larger than the sum of its proper divisors (1).

345262261361 is an equidigital number, since it uses as much as digits as its factorization.

345262261361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 41.

The spelling of 345262261361 in words is "three hundred forty-five billion, two hundred sixty-two million, two hundred sixty-one thousand, three hundred sixty-one".