29172066397 has 2 divisors, whose sum is σ = 29172066398. Its totient is φ = 29172066396.

The previous prime is 29172066373. The next prime is 29172066421. The reversal of 29172066397 is 79366027192.

It is a balanced prime because it is at equal distance from previous prime (29172066373) and next prime (29172066421).

It can be written as a sum of positive squares in only one way, i.e., 29075024196 + 97042201 = 170514^2 + 9851^2 .

It is a cyclic number.

It is not a de Polignac number, because 29172066397 - 2²⁷ = 29037848669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29172066337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14586033198 + 14586033199.

It is an arithmetic number, because the mean of its divisors is an integer number (14586033199).

Almost surely, 2^29172066397 is an apocalyptic number.

It is an amenable number.

29172066397 is a deficient number, since it is larger than the sum of its proper divisors (1).

29172066397 is an equidigital number, since it uses as much as digits as its factorization.

29172066397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The spelling of 29172066397 in words is "twenty-nine billion, one hundred seventy-two million, sixty-six thousand, three hundred ninety-seven".