13304129781 has 16 divisors (see below), whose sum is σ = 18196706880. Its totient is φ = 8641516800.

The previous prime is 13304129771. The next prime is 13304129803. The reversal of 13304129781 is 18792140331.

It is not a de Polignac number, because 13304129781 - 2⁷ = 13304129653 is a prime.

It is a super-2 number, since 2×13304129781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13304129711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76866 + ... + 180323.

It is an arithmetic number, because the mean of its divisors is an integer number (1137294180).

Almost surely, 2^13304129781 is an apocalyptic number.

It is an amenable number.

13304129781 is a deficient number, since it is larger than the sum of its proper divisors (4892577099).

13304129781 is a wasteful number, since it uses less digits than its factorization.

13304129781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257636.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 13304129781 in words is "thirteen billion, three hundred four million, one hundred twenty-nine thousand, seven hundred eighty-one".