2134561440397 has 2 divisors, whose sum is σ = 2134561440398. Its totient is φ = 2134561440396.

The previous prime is 2134561440379. The next prime is 2134561440457. The reversal of 2134561440397 is 7930441654312.

It is a happy number.

Together with previous prime (2134561440379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2015863275721 + 118698164676 = 1419811^2 + 344526^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134561440397 - 2³⁵ = 2100201702029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2134561440397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2134561440497) 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, 1067280720198 + 1067280720199.

It is an arithmetic number, because the mean of its divisors is an integer number (1067280720199).

Almost surely, 2^{2134561440397} is an apocalyptic number.

It is an amenable number.

2134561440397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134561440397 is an equidigital number, since it uses as much as digits as its factorization.

2134561440397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 2134561440397 in words is "two trillion, one hundred thirty-four billion, five hundred sixty-one million, four hundred forty thousand, three hundred ninety-seven".