345443721761087 has 2 divisors, whose sum is σ = 345443721761088. Its totient is φ = 345443721761086.

The previous prime is 345443721760897. The next prime is 345443721761143. The reversal of 345443721761087 is 780167127344543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345443721761087 - 2⁸ = 345443721760831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345443721761987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172721860880543 + 172721860880544.

It is an arithmetic number, because the mean of its divisors is an integer number (172721860880544).

Almost surely, 2^{345443721761087} is an apocalyptic number.

345443721761087 is a deficient number, since it is larger than the sum of its proper divisors (1).

345443721761087 is an equidigital number, since it uses as much as digits as its factorization.

345443721761087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94832640, while the sum is 62.

The spelling of 345443721761087 in words is "three hundred forty-five trillion, four hundred forty-three billion, seven hundred twenty-one million, seven hundred sixty-one thousand, eighty-seven".