15969810940 has 24 divisors (see below), whose sum is σ = 33868652832. Its totient is φ = 6324676800.

The previous prime is 15969810889. The next prime is 15969810949. The reversal of 15969810940 is 4901896951.

It is a happy number.

It is a super-3 number, since 3×15969810940³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15969810949) 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, 3950904 + ... + 3954943.

It is an arithmetic number, because the mean of its divisors is an integer number (1411193868).

Almost surely, 2^15969810940 is an apocalyptic number.

15969810940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15969810940 is an abundant number, since it is smaller than the sum of its proper divisors (17898841892).

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

15969810940 is a wasteful number, since it uses less digits than its factorization.

15969810940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905957 (or 7905955 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 52.

The spelling of 15969810940 in words is "fifteen billion, nine hundred sixty-nine million, eight hundred ten thousand, nine hundred forty".