2819575612921 has 2 divisors, whose sum is σ = 2819575612922. Its totient is φ = 2819575612920.

The previous prime is 2819575612849. The next prime is 2819575612957. The reversal of 2819575612921 is 1292165759182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2814304852921 + 5270760000 = 1677589^2 + 72600^2 .

It is a cyclic number.

It is not a de Polignac number, because 2819575612921 - 2⁹ = 2819575612409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2819575610921) 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, 1409787806460 + 1409787806461.

It is an arithmetic number, because the mean of its divisors is an integer number (1409787806461).

Almost surely, 2^{2819575612921} is an apocalyptic number.

It is an amenable number.

2819575612921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2819575612921 is an equidigital number, since it uses as much as digits as its factorization.

2819575612921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 58.

The spelling of 2819575612921 in words is "two trillion, eight hundred nineteen billion, five hundred seventy-five million, six hundred twelve thousand, nine hundred twenty-one".