29727921133 has 2 divisors, whose sum is σ = 29727921134. Its totient is φ = 29727921132.

The previous prime is 29727921053. The next prime is 29727921137. The reversal of 29727921133 is 33112972792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21483644329 + 8244276804 = 146573^2 + 90798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29727921133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29727921137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14863960566 + 14863960567.

It is an arithmetic number, because the mean of its divisors is an integer number (14863960567).

Almost surely, 2^29727921133 is an apocalyptic number.

It is an amenable number.

29727921133 is a deficient number, since it is larger than the sum of its proper divisors (1).

29727921133 is an equidigital number, since it uses as much as digits as its factorization.

29727921133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The spelling of 29727921133 in words is "twenty-nine billion, seven hundred twenty-seven million, nine hundred twenty-one thousand, one hundred thirty-three".