15880284289 has 9 divisors (see below), whose sum is σ = 16603781313. Its totient is φ = 15187064772.

The previous prime is 15880284281. The next prime is 15880284313. The reversal of 15880284289 is 98248208851.

The square root of 15880284289 is 126017.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 15880284289 - 2³ = 15880284281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15880284281) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2895652 + ... + 2901130.

Almost surely, 2^15880284289 is an apocalyptic number.

15880284289 is the 126017-th square number.

15880284289 is the 63009-th centered octagonal number.

It is an amenable number.

15880284289 is a deficient number, since it is larger than the sum of its proper divisors (723497024).

15880284289 is an frugal number, since it uses more digits than its factorization.

15880284289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11004 (or 5502 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 55.

It can be divided in two parts, 158802842 and 89, that added together give a triangular number (158802931 = T₁₇₈₂₁).

The spelling of 15880284289 in words is "fifteen billion, eight hundred eighty million, two hundred eighty-four thousand, two hundred eighty-nine".