2550666919 has 2 divisors, whose sum is σ = 2550666920. Its totient is φ = 2550666918.

The previous prime is 2550666863. The next prime is 2550666947. The reversal of 2550666919 is 9196660552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2550666919 - 2¹⁹ = 2550142631 is a prime.

It is a super-2 number, since 2×2550666919² = 13011803463361905122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2550616919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275333459 + 1275333460.

It is an arithmetic number, because the mean of its divisors is an integer number (1275333460).

Almost surely, 2^2550666919 is an apocalyptic number.

2550666919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2550666919 is an equidigital number, since it uses as much as digits as its factorization.

2550666919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 874800, while the sum is 49.

The square root of 2550666919 is about 50504.1277421955. The cubic root of 2550666919 is about 1366.3163013093.

The spelling of 2550666919 in words is "two billion, five hundred fifty million, six hundred sixty-six thousand, nine hundred nineteen".