340954535454581 has 2 divisors, whose sum is σ = 340954535454582. Its totient is φ = 340954535454580.

The previous prime is 340954535454563. The next prime is 340954535454587. The reversal of 340954535454581 is 185454535459043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328676232124900 + 12278303329681 = 18129430^2 + 3504041^2 .

It is a cyclic number.

It is not a de Polignac number, because 340954535454581 - 2¹⁴ = 340954535438197 is a prime.

It is a super-2 number, since 2×340954535454581² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340954535454587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170477267727290 + 170477267727291.

It is an arithmetic number, because the mean of its divisors is an integer number (170477267727291).

Almost surely, 2^{340954535454581} is an apocalyptic number.

It is an amenable number.

340954535454581 is a deficient number, since it is larger than the sum of its proper divisors (1).

340954535454581 is an equidigital number, since it uses as much as digits as its factorization.

340954535454581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400000, while the sum is 65.

The spelling of 340954535454581 in words is "three hundred forty trillion, nine hundred fifty-four billion, five hundred thirty-five million, four hundred fifty-four thousand, five hundred eighty-one".