15151111551223 has 2 divisors, whose sum is σ = 15151111551224. Its totient is φ = 15151111551222.

The previous prime is 15151111551091. The next prime is 15151111551239. The reversal of 15151111551223 is 32215511115151.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15151111551223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15151111554223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7575555775611 + 7575555775612.

It is an arithmetic number, because the mean of its divisors is an integer number (7575555775612).

Almost surely, 2^{15151111551223} is an apocalyptic number.

15151111551223 is a deficient number, since it is larger than the sum of its proper divisors (1).

15151111551223 is an equidigital number, since it uses as much as digits as its factorization.

15151111551223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7500, while the sum is 34.

Adding to 15151111551223 its reverse (32215511115151), we get a palindrome (47366622666374).

The spelling of 15151111551223 in words is "fifteen trillion, one hundred fifty-one billion, one hundred eleven million, five hundred fifty-one thousand, two hundred twenty-three".