340475721577 has 2 divisors, whose sum is σ = 340475721578. Its totient is φ = 340475721576.

The previous prime is 340475721569. The next prime is 340475721601. The reversal of 340475721577 is 775127574043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231357152016 + 109118569561 = 480996^2 + 330331^2 .

It is a cyclic number.

It is not a de Polignac number, because 340475721577 - 2³ = 340475721569 is a prime.

It is not a weakly prime, because it can be changed into another prime (340475731577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170237860788 + 170237860789.

It is an arithmetic number, because the mean of its divisors is an integer number (170237860789).

Almost surely, 2^340475721577 is an apocalyptic number.

It is an amenable number.

340475721577 is a deficient number, since it is larger than the sum of its proper divisors (1).

340475721577 is an equidigital number, since it uses as much as digits as its factorization.

340475721577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5762400, while the sum is 52.

The spelling of 340475721577 in words is "three hundred forty billion, four hundred seventy-five million, seven hundred twenty-one thousand, five hundred seventy-seven".