340744381877 has 2 divisors, whose sum is σ = 340744381878. Its totient is φ = 340744381876.

The previous prime is 340744381837. The next prime is 340744381931. The reversal of 340744381877 is 778183447043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170675570641 + 170068811236 = 413129^2 + 412394^2 .

It is a cyclic number.

It is not a de Polignac number, because 340744381877 - 2²⁴ = 340727604661 is a prime.

It is a super-2 number, since 2×340744381877² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340744381837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170372190938 + 170372190939.

It is an arithmetic number, because the mean of its divisors is an integer number (170372190939).

Almost surely, 2^340744381877 is an apocalyptic number.

It is an amenable number.

340744381877 is a deficient number, since it is larger than the sum of its proper divisors (1).

340744381877 is an equidigital number, since it uses as much as digits as its factorization.

340744381877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12644352, while the sum is 56.

The spelling of 340744381877 in words is "three hundred forty billion, seven hundred forty-four million, three hundred eighty-one thousand, eight hundred seventy-seven".