29397494657 has 2 divisors, whose sum is σ = 29397494658. Its totient is φ = 29397494656.

The previous prime is 29397494653. The next prime is 29397494663. The reversal of 29397494657 is 75649479392.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28062615361 + 1334879296 = 167519^2 + 36536^2 .

It is a cyclic number.

It is not a de Polignac number, because 29397494657 - 2² = 29397494653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29397494593 and 29397494602.

It is not a weakly prime, because it can be changed into another prime (29397494653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14698747328 + 14698747329.

It is an arithmetic number, because the mean of its divisors is an integer number (14698747329).

Almost surely, 2^29397494657 is an apocalyptic number.

It is an amenable number.

29397494657 is a deficient number, since it is larger than the sum of its proper divisors (1).

29397494657 is an equidigital number, since it uses as much as digits as its factorization.

29397494657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102876480, while the sum is 65.

The spelling of 29397494657 in words is "twenty-nine billion, three hundred ninety-seven million, four hundred ninety-four thousand, six hundred fifty-seven".