11997943362929 has 2 divisors, whose sum is σ = 11997943362930. Its totient is φ = 11997943362928.

The previous prime is 11997943362863. The next prime is 11997943362949. The reversal of 11997943362929 is 92926334979911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9188052192400 + 2809891170529 = 3031180^2 + 1676273^2 .

It is a cyclic number.

It is not a de Polignac number, because 11997943362929 - 2⁸ = 11997943362673 is a prime.

It is a super-2 number, since 2×11997943362929² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11997943362949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5998971681464 + 5998971681465.

It is an arithmetic number, because the mean of its divisors is an integer number (5998971681465).

Almost surely, 2^{11997943362929} is an apocalyptic number.

It is an amenable number.

11997943362929 is a deficient number, since it is larger than the sum of its proper divisors (1).

11997943362929 is an equidigital number, since it uses as much as digits as its factorization.

11997943362929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 357128352, while the sum is 74.

The spelling of 11997943362929 in words is "eleven trillion, nine hundred ninety-seven billion, nine hundred forty-three million, three hundred sixty-two thousand, nine hundred twenty-nine".