29643621149 has 2 divisors, whose sum is σ = 29643621150. Its totient is φ = 29643621148.

The previous prime is 29643621107. The next prime is 29643621167. The reversal of 29643621149 is 94112634692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24572757049 + 5070864100 = 156757^2 + 71210^2 .

It is a cyclic number.

It is not a de Polignac number, because 29643621149 - 2⁸ = 29643620893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29643621179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14821810574 + 14821810575.

It is an arithmetic number, because the mean of its divisors is an integer number (14821810575).

Almost surely, 2^29643621149 is an apocalyptic number.

It is an amenable number.

29643621149 is a deficient number, since it is larger than the sum of its proper divisors (1).

29643621149 is an equidigital number, since it uses as much as digits as its factorization.

29643621149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 47.

The spelling of 29643621149 in words is "twenty-nine billion, six hundred forty-three million, six hundred twenty-one thousand, one hundred forty-nine".