13333782780 has 72 divisors (see below), whose sum is σ = 40478033232. Its totient is φ = 3552842496.

The previous prime is 13333782769. The next prime is 13333782799. The reversal of 13333782780 is 8728733331.

13333782780 is a `hidden beast` number, since 1 + 3 + 3 + 3 + 378 + 278 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202072 + ... + 259808.

It is an arithmetic number, because the mean of its divisors is an integer number (562194906).

Almost surely, 2^13333782780 is an apocalyptic number.

13333782780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13333782780 is an abundant number, since it is smaller than the sum of its proper divisors (27144250452).

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

13333782780 is a wasteful number, since it uses less digits than its factorization.

13333782780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59035 (or 59030 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 13333782780 in words is "thirteen billion, three hundred thirty-three million, seven hundred eighty-two thousand, seven hundred eighty".