15490716905 has 4 divisors (see below), whose sum is σ = 18588860292. Its totient is φ = 12392573520.

The previous prime is 15490716893. The next prime is 15490716953. The reversal of 15490716905 is 50961709451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50961709451 = 213919 ⋅238229.

It can be written as a sum of positive squares in 2 ways, for example, as 11748825664 + 3741891241 = 108392^2 + 61171^2 .

It is not a de Polignac number, because 15490716905 - 2⁴ = 15490716889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15490716905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1549071686 + ... + 1549071695.

It is an arithmetic number, because the mean of its divisors is an integer number (4647215073).

Almost surely, 2^15490716905 is an apocalyptic number.

It is an amenable number.

15490716905 is a deficient number, since it is larger than the sum of its proper divisors (3098143387).

15490716905 is an equidigital number, since it uses as much as digits as its factorization.

15490716905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098143386.

The product of its (nonzero) digits is 340200, while the sum is 47.

The spelling of 15490716905 in words is "fifteen billion, four hundred ninety million, seven hundred sixteen thousand, nine hundred five".