219107670797 has 2 divisors, whose sum is σ = 219107670798. Its totient is φ = 219107670796.

The previous prime is 219107670751. The next prime is 219107670809. The reversal of 219107670797 is 797076701912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115612920361 + 103494750436 = 340019^2 + 321706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219107670797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219107670737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109553835398 + 109553835399.

It is an arithmetic number, because the mean of its divisors is an integer number (109553835399).

Almost surely, 2^219107670797 is an apocalyptic number.

It is an amenable number.

219107670797 is a deficient number, since it is larger than the sum of its proper divisors (1).

219107670797 is an equidigital number, since it uses as much as digits as its factorization.

219107670797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2333772, while the sum is 56.

The spelling of 219107670797 in words is "two hundred nineteen billion, one hundred seven million, six hundred seventy thousand, seven hundred ninety-seven".