15127213961 has 2 divisors, whose sum is σ = 15127213962. Its totient is φ = 15127213960.

The previous prime is 15127213901. The next prime is 15127213993. The reversal of 15127213961 is 16931272151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11226462025 + 3900751936 = 105955^2 + 62456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15127213961 is a prime.

It is not a weakly prime, because it can be changed into another prime (15127213901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7563606980 + 7563606981.

It is an arithmetic number, because the mean of its divisors is an integer number (7563606981).

Almost surely, 2^15127213961 is an apocalyptic number.

It is an amenable number.

15127213961 is a deficient number, since it is larger than the sum of its proper divisors (1).

15127213961 is an equidigital number, since it uses as much as digits as its factorization.

15127213961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 38.

The spelling of 15127213961 in words is "fifteen billion, one hundred twenty-seven million, two hundred thirteen thousand, nine hundred sixty-one".