29224819681 has 2 divisors, whose sum is σ = 29224819682. Its totient is φ = 29224819680.

The previous prime is 29224819643. The next prime is 29224819691. The reversal of 29224819681 is 18691842292.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28096464400 + 1128355281 = 167620^2 + 33591^2 .

It is a cyclic number.

It is not a de Polignac number, because 29224819681 - 2⁷ = 29224819553 is a prime.

It is a super-2 number, since 2×29224819681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29224819691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14612409840 + 14612409841.

It is an arithmetic number, because the mean of its divisors is an integer number (14612409841).

Almost surely, 2^29224819681 is an apocalyptic number.

It is an amenable number.

29224819681 is a deficient number, since it is larger than the sum of its proper divisors (1).

29224819681 is an equidigital number, since it uses as much as digits as its factorization.

29224819681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 52.

The spelling of 29224819681 in words is "twenty-nine billion, two hundred twenty-four million, eight hundred nineteen thousand, six hundred eighty-one".