13309947740 has 24 divisors (see below), whose sum is σ = 29166147360. Its totient is φ = 5092501568.

The previous prime is 13309947713. The next prime is 13309947787. The reversal of 13309947740 is 4774990331.

It is a super-2 number, since 2×13309947740² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14466875 + ... + 14467794.

It is an arithmetic number, because the mean of its divisors is an integer number (1215256140).

Almost surely, 2^13309947740 is an apocalyptic number.

13309947740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13309947740 is an abundant number, since it is smaller than the sum of its proper divisors (15856199620).

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

13309947740 is a wasteful number, since it uses less digits than its factorization.

13309947740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28934701 (or 28934699 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 47.

The spelling of 13309947740 in words is "thirteen billion, three hundred nine million, nine hundred forty-seven thousand, seven hundred forty".