15788271272 has 32 divisors (see below), whose sum is σ = 29890791720. Its totient is φ = 7817671680.

The previous prime is 15788271269. The next prime is 15788271287. The reversal of 15788271272 is 27217288751.

It can be written as a sum of positive squares in 4 ways, for example, as 13196035876 + 2592235396 = 114874^2 + 50914^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15788271272.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444308 + ... + 478524.

Almost surely, 2^15788271272 is an apocalyptic number.

It is an amenable number.

15788271272 is a deficient number, since it is larger than the sum of its proper divisors (14102520448).

15788271272 is a wasteful number, since it uses less digits than its factorization.

15788271272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34781 (or 34777 counting only the distinct ones).

The product of its digits is 878080, while the sum is 50.

The spelling of 15788271272 in words is "fifteen billion, seven hundred eighty-eight million, two hundred seventy-one thousand, two hundred seventy-two".