354097881509 has 2 divisors, whose sum is σ = 354097881510. Its totient is φ = 354097881508.

The previous prime is 354097881497. The next prime is 354097881521. The reversal of 354097881509 is 905188790453.

It is a balanced prime because it is at equal distance from previous prime (354097881497) and next prime (354097881521).

It can be written as a sum of positive squares in only one way, i.e., 311257989025 + 42839892484 = 557905^2 + 206978^2 .

It is a cyclic number.

It is not a de Polignac number, because 354097881509 - 2²⁰ = 354096832933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354097881539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177048940754 + 177048940755.

It is an arithmetic number, because the mean of its divisors is an integer number (177048940755).

Almost surely, 2^354097881509 is an apocalyptic number.

It is an amenable number.

354097881509 is a deficient number, since it is larger than the sum of its proper divisors (1).

354097881509 is an equidigital number, since it uses as much as digits as its factorization.

354097881509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 59.

The spelling of 354097881509 in words is "three hundred fifty-four billion, ninety-seven million, eight hundred eighty-one thousand, five hundred nine".