5656201779919 has 2 divisors, whose sum is σ = 5656201779920. Its totient is φ = 5656201779918.

The previous prime is 5656201779913. The next prime is 5656201779929. The reversal of 5656201779919 is 9199771026565.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5656201779919 - 2²¹ = 5656199682767 is a prime.

It is a super-2 number, since 2×5656201779919² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5656201779913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828100889959 + 2828100889960.

It is an arithmetic number, because the mean of its divisors is an integer number (2828100889960).

Almost surely, 2^{5656201779919} is an apocalyptic number.

5656201779919 is a deficient number, since it is larger than the sum of its proper divisors (1).

5656201779919 is an equidigital number, since it uses as much as digits as its factorization.

5656201779919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64297800, while the sum is 67.

The spelling of 5656201779919 in words is "five trillion, six hundred fifty-six billion, two hundred one million, seven hundred seventy-nine thousand, nine hundred nineteen".