29071000681 has 2 divisors, whose sum is σ = 29071000682. Its totient is φ = 29071000680.

The previous prime is 29071000667. The next prime is 29071000687. The reversal of 29071000681 is 18600017092.

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., 15213002281 + 13857998400 = 123341^2 + 117720^2 .

It is a cyclic number.

It is not a de Polignac number, because 29071000681 - 2⁵ = 29071000649 is a prime.

It is a super-2 number, since 2×29071000681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29071000687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14535500340 + 14535500341.

It is an arithmetic number, because the mean of its divisors is an integer number (14535500341).

Almost surely, 2^29071000681 is an apocalyptic number.

It is an amenable number.

29071000681 is a deficient number, since it is larger than the sum of its proper divisors (1).

29071000681 is an equidigital number, since it uses as much as digits as its factorization.

29071000681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The spelling of 29071000681 in words is "twenty-nine billion, seventy-one million, six hundred eighty-one", and thus it is an aban number.