13263933840 has 80 divisors (see below), whose sum is σ = 41130903168. Its totient is φ = 3535955968.

The previous prime is 13263933829. The next prime is 13263933883. The reversal of 13263933840 is 4833936231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 13263933792 and 13263933801.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1034509 + ... + 1047251.

Almost surely, 2^13263933840 is an apocalyptic number.

13263933840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13263933840 is an abundant number, since it is smaller than the sum of its proper divisors (27866969328).

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

13263933840 is a wasteful number, since it uses less digits than its factorization.

13263933840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17096 (or 17090 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 13263933840 in words is "thirteen billion, two hundred sixty-three million, nine hundred thirty-three thousand, eight hundred forty".