29421836491 has 2 divisors, whose sum is σ = 29421836492. Its totient is φ = 29421836490.

The previous prime is 29421836443. The next prime is 29421836513. The reversal of 29421836491 is 19463812492.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29421836491 - 2¹³ = 29421828299 is a prime.

It is not a weakly prime, because it can be changed into another prime (29421836891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14710918245 + 14710918246.

It is an arithmetic number, because the mean of its divisors is an integer number (14710918246).

Almost surely, 2^29421836491 is an apocalyptic number.

29421836491 is a deficient number, since it is larger than the sum of its proper divisors (1).

29421836491 is an equidigital number, since it uses as much as digits as its factorization.

29421836491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 49.

The spelling of 29421836491 in words is "twenty-nine billion, four hundred twenty-one million, eight hundred thirty-six thousand, four hundred ninety-one".