2119621495897 has 2 divisors, whose sum is σ = 2119621495898. Its totient is φ = 2119621495896.

The previous prime is 2119621495841. The next prime is 2119621495933. The reversal of 2119621495897 is 7985941269112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1337760571456 + 781860924441 = 1156616^2 + 884229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2119621495897 is a prime.

It is not a weakly prime, because it can be changed into another prime (2119621495297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059810747948 + 1059810747949.

It is an arithmetic number, because the mean of its divisors is an integer number (1059810747949).

Almost surely, 2^{2119621495897} is an apocalyptic number.

It is an amenable number.

2119621495897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119621495897 is an equidigital number, since it uses as much as digits as its factorization.

2119621495897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 64.

The spelling of 2119621495897 in words is "two trillion, one hundred nineteen billion, six hundred twenty-one million, four hundred ninety-five thousand, eight hundred ninety-seven".