29639741081 has 2 divisors, whose sum is σ = 29639741082. Its totient is φ = 29639741080.

The previous prime is 29639741003. The next prime is 29639741101. The reversal of 29639741081 is 18014793692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22674336400 + 6965404681 = 150580^2 + 83459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29639741081 is a prime.

It is a super-2 number, since 2×29639741081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29639741881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14819870540 + 14819870541.

It is an arithmetic number, because the mean of its divisors is an integer number (14819870541).

Almost surely, 2^29639741081 is an apocalyptic number.

It is an amenable number.

29639741081 is a deficient number, since it is larger than the sum of its proper divisors (1).

29639741081 is an equidigital number, since it uses as much as digits as its factorization.

29639741081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 29639741081 in words is "twenty-nine billion, six hundred thirty-nine million, seven hundred forty-one thousand, eighty-one".