11571996829 has 2 divisors, whose sum is σ = 11571996830. Its totient is φ = 11571996828.

The previous prime is 11571996769. The next prime is 11571996859. The reversal of 11571996829 is 92869917511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8043399225 + 3528597604 = 89685^2 + 59402^2 .

It is a cyclic number.

It is not a de Polignac number, because 11571996829 - 2¹⁹ = 11571472541 is a prime.

It is a super-2 number, since 2×11571996829² (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 (11571996859) 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, 5785998414 + 5785998415.

It is an arithmetic number, because the mean of its divisors is an integer number (5785998415).

Almost surely, 2^11571996829 is an apocalyptic number.

It is an amenable number.

11571996829 is a deficient number, since it is larger than the sum of its proper divisors (1).

11571996829 is an equidigital number, since it uses as much as digits as its factorization.

11571996829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 58.

The spelling of 11571996829 in words is "eleven billion, five hundred seventy-one million, nine hundred ninety-six thousand, eight hundred twenty-nine".