15131641243 has 2 divisors, whose sum is σ = 15131641244. Its totient is φ = 15131641242.

The previous prime is 15131641241. The next prime is 15131641289. The reversal of 15131641243 is 34214613151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15131641243 - 2¹ = 15131641241 is a prime.

Together with 15131641241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15131641241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7565820621 + 7565820622.

It is an arithmetic number, because the mean of its divisors is an integer number (7565820622).

Almost surely, 2^15131641243 is an apocalyptic number.

15131641243 is a deficient number, since it is larger than the sum of its proper divisors (1).

15131641243 is an equidigital number, since it uses as much as digits as its factorization.

15131641243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The spelling of 15131641243 in words is "fifteen billion, one hundred thirty-one million, six hundred forty-one thousand, two hundred forty-three".