263695423672464 has 40 divisors (see below), whose sum is σ = 778529346081600. Its totient is φ = 75341549620608.

The previous prime is 263695423672441. The next prime is 263695423672469. The reversal of 263695423672464 is 464276324596362.

It is not an unprimeable number, because it can be changed into a prime (263695423672469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392403903939 + ... + 392403904610.

It is an arithmetic number, because the mean of its divisors is an integer number (19463233652040).

Almost surely, 2^{263695423672464} is an apocalyptic number.

263695423672464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

263695423672464 is an abundant number, since it is smaller than the sum of its proper divisors (514833922409136).

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

263695423672464 is a wasteful number, since it uses less digits than its factorization.

263695423672464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784807808567 (or 784807808561 counting only the distinct ones).

The product of its digits is 1881169920, while the sum is 69.

The spelling of 263695423672464 in words is "two hundred sixty-three trillion, six hundred ninety-five billion, four hundred twenty-three million, six hundred seventy-two thousand, four hundred sixty-four".