263975739912 has 40 divisors (see below), whose sum is σ = 739376495550. Its totient is φ = 87991913088.

The previous prime is 263975739901. The next prime is 263975739931. The reversal of 263975739912 is 219937579362.

263975739912 is a `hidden beast` number, since 26 + 39 + 7 + 573 + 9 + 9 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 206292189636 + 57683550276 = 454194^2 + 240174^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 263975739912.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 203684337 + ... + 203685632.

Almost surely, 2^263975739912 is an apocalyptic number.

It is an amenable number.

263975739912 is an abundant number, since it is smaller than the sum of its proper divisors (475400755638).

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

263975739912 is a wasteful number, since it uses less digits than its factorization.

263975739912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407369987 (or 407369974 counting only the distinct ones).

The product of its digits is 38578680, while the sum is 63.

The spelling of 263975739912 in words is "two hundred sixty-three billion, nine hundred seventy-five million, seven hundred thirty-nine thousand, nine hundred twelve".