263145643750 has 48 divisors (see below), whose sum is σ = 538218145584. Its totient is φ = 95689300000.

The previous prime is 263145643723. The next prime is 263145643751. The reversal of 263145643750 is 57346541362.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 263145643750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263145643751) 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 in 23 ways as a sum of consecutive naturals, for example, 1845037 + ... + 1982536.

It is an arithmetic number, because the mean of its divisors is an integer number (11212878033).

Almost surely, 2^263145643750 is an apocalyptic number.

263145643750 is an abundant number, since it is smaller than the sum of its proper divisors (275072501834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263145643750 is an equidigital number, since it uses as much as digits as its factorization.

263145643750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827611 (or 3827591 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 263145643750 in words is "two hundred sixty-three billion, one hundred forty-five million, six hundred forty-three thousand, seven hundred fifty".