2563997835 has 16 divisors (see below), whose sum is σ = 4688453376. Its totient is φ = 1172113248.

The previous prime is 2563997833. The next prime is 2563997837. The reversal of 2563997835 is 5387993652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2563997833) and next prime (2563997837).

It is not a de Polignac number, because 2563997835 - 2¹ = 2563997833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2563997831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12209409 + ... + 12209618.

It is an arithmetic number, because the mean of its divisors is an integer number (293028336).

Almost surely, 2^2563997835 is an apocalyptic number.

2563997835 is a deficient number, since it is larger than the sum of its proper divisors (2124455541).

2563997835 is a wasteful number, since it uses less digits than its factorization.

2563997835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24419042.

The product of its digits is 12247200, while the sum is 57.

The square root of 2563997835 is about 50635.9342265945. The cubic root of 2563997835 is about 1368.6924913183.

The spelling of 2563997835 in words is "two billion, five hundred sixty-three million, nine hundred ninety-seven thousand, eight hundred thirty-five".