11915959129 has 2 divisors, whose sum is σ = 11915959130. Its totient is φ = 11915959128.

The previous prime is 11915959063. The next prime is 11915959157. The reversal of 11915959129 is 92195951911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11913285904 + 2673225 = 109148^2 + 1635^2 .

It is a cyclic number.

It is not a de Polignac number, because 11915959129 - 2¹⁹ = 11915434841 is a prime.

It is not a weakly prime, because it can be changed into another prime (11915959169) 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, 5957979564 + 5957979565.

It is an arithmetic number, because the mean of its divisors is an integer number (5957979565).

Almost surely, 2^11915959129 is an apocalyptic number.

It is an amenable number.

11915959129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11915959129 is an equidigital number, since it uses as much as digits as its factorization.

11915959129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 328050, while the sum is 52.

The spelling of 11915959129 in words is "eleven billion, nine hundred fifteen million, nine hundred fifty-nine thousand, one hundred twenty-nine".