29952173897 has 2 divisors, whose sum is σ = 29952173898. Its totient is φ = 29952173896.

The previous prime is 29952173879. The next prime is 29952173947. The reversal of 29952173897 is 79837125992.

Together with previous prime (29952173879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22711695616 + 7240478281 = 150704^2 + 85091^2 .

It is a cyclic number.

It is not a de Polignac number, because 29952173897 - 2³⁰ = 28878432073 is a prime.

It is a super-2 number, since 2×29952173897² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29952172897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14976086948 + 14976086949.

It is an arithmetic number, because the mean of its divisors is an integer number (14976086949).

Almost surely, 2^29952173897 is an apocalyptic number.

It is an amenable number.

29952173897 is a deficient number, since it is larger than the sum of its proper divisors (1).

29952173897 is an equidigital number, since it uses as much as digits as its factorization.

29952173897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17146080, while the sum is 62.

The spelling of 29952173897 in words is "twenty-nine billion, nine hundred fifty-two million, one hundred seventy-three thousand, eight hundred ninety-seven".