15916366441 has 4 divisors (see below), whose sum is σ = 16134398932. Its totient is φ = 15698333952.

The previous prime is 15916366439. The next prime is 15916366469. The reversal of 15916366441 is 14466361951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14466361951 = 331 ⋅43705021.

It can be written as a sum of positive squares in 2 ways, for example, as 3046598416 + 12869768025 = 55196^2 + 113445^2 .

It is a cyclic number.

It is not a de Polignac number, because 15916366441 - 2¹ = 15916366439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15916366391 and 15916366400.

It is not an unprimeable number, because it can be changed into a prime (15916366421) 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, 109016136 + ... + 109016281.

It is an arithmetic number, because the mean of its divisors is an integer number (4033599733).

Almost surely, 2^15916366441 is an apocalyptic number.

It is an amenable number.

15916366441 is a deficient number, since it is larger than the sum of its proper divisors (218032491).

15916366441 is an equidigital number, since it uses as much as digits as its factorization.

15916366441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218032490.

The product of its digits is 466560, while the sum is 46.

The spelling of 15916366441 in words is "fifteen billion, nine hundred sixteen million, three hundred sixty-six thousand, four hundred forty-one".