29449665378857 has 2 divisors, whose sum is σ = 29449665378858. Its totient is φ = 29449665378856.

The previous prime is 29449665378841. The next prime is 29449665378883. The reversal of 29449665378857 is 75887356694492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17628040427776 + 11821624951081 = 4198576^2 + 3438259^2 .

It is a cyclic number.

It is not a de Polignac number, because 29449665378857 - 2⁴ = 29449665378841 is a prime.

It is not a weakly prime, because it can be changed into another prime (29449665378817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14724832689428 + 14724832689429.

It is an arithmetic number, because the mean of its divisors is an integer number (14724832689429).

Almost surely, 2^{29449665378857} is an apocalyptic number.

It is an amenable number.

29449665378857 is a deficient number, since it is larger than the sum of its proper divisors (1).

29449665378857 is an equidigital number, since it uses as much as digits as its factorization.

29449665378857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21946982400, while the sum is 83.

The spelling of 29449665378857 in words is "twenty-nine trillion, four hundred forty-nine billion, six hundred sixty-five million, three hundred seventy-eight thousand, eight hundred fifty-seven".