16047561289 has 4 divisors (see below), whose sum is σ = 16055575056. Its totient is φ = 16039547524.

The previous prime is 16047561239. The next prime is 16047561293. The reversal of 16047561289 is 98216574061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98216574061 = 17 ⋅5777445533.

It is a cyclic number.

It is not a de Polignac number, because 16047561289 - 2⁷ = 16047561161 is a prime.

It is a super-2 number, since 2×16047561289² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16047561239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4003879 + ... + 4007884.

It is an arithmetic number, because the mean of its divisors is an integer number (4013893764).

Almost surely, 2^16047561289 is an apocalyptic number.

It is an amenable number.

16047561289 is a deficient number, since it is larger than the sum of its proper divisors (8013767).

16047561289 is an equidigital number, since it uses as much as digits as its factorization.

16047561289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8013766.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 16047561289 in words is "sixteen billion, forty-seven million, five hundred sixty-one thousand, two hundred eighty-nine".