263875252641 has 32 divisors (see below), whose sum is σ = 472392066048. Its totient is φ = 126533586240.

The previous prime is 263875252639. The next prime is 263875252643. The reversal of 263875252641 is 146252578362.

It is an interprime number because it is at equal distance from previous prime (263875252639) and next prime (263875252643).

It is not a de Polignac number, because 263875252641 - 2¹ = 263875252639 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (263875252643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43932271 + ... + 43938276.

It is an arithmetic number, because the mean of its divisors is an integer number (14762252064).

Almost surely, 2^263875252641 is an apocalyptic number.

263875252641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

263875252641 is a deficient number, since it is larger than the sum of its proper divisors (208516813407).

263875252641 is a wasteful number, since it uses less digits than its factorization.

263875252641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87870581.

The product of its digits is 4838400, while the sum is 51.

The spelling of 263875252641 in words is "two hundred sixty-three billion, eight hundred seventy-five million, two hundred fifty-two thousand, six hundred forty-one".