2553617663 has 2 divisors, whose sum is σ = 2553617664. Its totient is φ = 2553617662.

The previous prime is 2553617657. The next prime is 2553617669. The reversal of 2553617663 is 3667163552.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2553617657) and next prime (2553617669).

It is a cyclic number.

It is not a de Polignac number, because 2553617663 - 2²⁰ = 2552569087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2553617669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276808831 + 1276808832.

It is an arithmetic number, because the mean of its divisors is an integer number (1276808832).

Almost surely, 2^2553617663 is an apocalyptic number.

2553617663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2553617663 is an equidigital number, since it uses as much as digits as its factorization.

2553617663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 44.

The square root of 2553617663 is about 50533.3321976693. The cubic root of 2553617663 is about 1366.8429734936.

The spelling of 2553617663 in words is "two billion, five hundred fifty-three million, six hundred seventeen thousand, six hundred sixty-three".