15120504197 has 2 divisors, whose sum is σ = 15120504198. Its totient is φ = 15120504196.

The previous prime is 15120504187. The next prime is 15120504241. The reversal of 15120504197 is 79140502151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11262727876 + 3857776321 = 106126^2 + 62111^2 .

It is a cyclic number.

It is not a de Polignac number, because 15120504197 - 2²⁸ = 14852068741 is a prime.

It is a super-2 number, since 2×15120504197² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15120504187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560252098 + 7560252099.

It is an arithmetic number, because the mean of its divisors is an integer number (7560252099).

Almost surely, 2^15120504197 is an apocalyptic number.

It is an amenable number.

15120504197 is a deficient number, since it is larger than the sum of its proper divisors (1).

15120504197 is an equidigital number, since it uses as much as digits as its factorization.

15120504197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 15120504197 in words is "fifteen billion, one hundred twenty million, five hundred four thousand, one hundred ninety-seven".