15091631105 has 8 divisors (see below), whose sum is σ = 18114233064. Its totient is φ = 12070454400.

The previous prime is 15091631039. The next prime is 15091631143. The reversal of 15091631105 is 50113619051.

It is a Cunningham number, because it is equal to 122848²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 2967198784 + 12124432321 = 54472^2 + 110111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15091631105 - 2¹⁸ = 15091368961 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 332876 + ... + 375485.

It is an arithmetic number, because the mean of its divisors is an integer number (2264279133).

Almost surely, 2^15091631105 is an apocalyptic number.

It is an amenable number.

15091631105 is a deficient number, since it is larger than the sum of its proper divisors (3022601959).

15091631105 is an equidigital number, since it uses as much as digits as its factorization.

15091631105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712627.

The product of its (nonzero) digits is 4050, while the sum is 32.

The spelling of 15091631105 in words is "fifteen billion, ninety-one million, six hundred thirty-one thousand, one hundred five".