15909117272 has 32 divisors (see below), whose sum is σ = 30404976480. Its totient is φ = 7801248000.

The previous prime is 15909117271. The next prime is 15909117281. The reversal of 15909117272 is 27271190951.

15909117272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×15909117272³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15909117271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266173 + ... + 1278675.

It is an arithmetic number, because the mean of its divisors is an integer number (950155515).

Almost surely, 2^15909117272 is an apocalyptic number.

It is an amenable number.

15909117272 is a deficient number, since it is larger than the sum of its proper divisors (14495859208).

15909117272 is a wasteful number, since it uses less digits than its factorization.

15909117272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15563 (or 15559 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 44.

The spelling of 15909117272 in words is "fifteen billion, nine hundred nine million, one hundred seventeen thousand, two hundred seventy-two".