29657491458109 has 2 divisors, whose sum is σ = 29657491458110. Its totient is φ = 29657491458108.

The previous prime is 29657491458053. The next prime is 29657491458181. The reversal of 29657491458109 is 90185419475692.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16777625602500 + 12879865855609 = 4096050^2 + 3588853^2 .

It is a cyclic number.

It is not a de Polignac number, because 29657491458109 - 2²¹ = 29657489360957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29657491458409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14828745729054 + 14828745729055.

It is an arithmetic number, because the mean of its divisors is an integer number (14828745729055).

Almost surely, 2^{29657491458109} is an apocalyptic number.

It is an amenable number.

29657491458109 is a deficient number, since it is larger than the sum of its proper divisors (1).

29657491458109 is an equidigital number, since it uses as much as digits as its factorization.

29657491458109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 195955200, while the sum is 70.

The spelling of 29657491458109 in words is "twenty-nine trillion, six hundred fifty-seven billion, four hundred ninety-one million, four hundred fifty-eight thousand, one hundred nine".