29128791941 has 2 divisors, whose sum is σ = 29128791942. Its totient is φ = 29128791940.

The previous prime is 29128791917. The next prime is 29128791949. The reversal of 29128791941 is 14919782192.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27524469025 + 1604322916 = 165905^2 + 40054^2 .

It is a cyclic number.

It is not a de Polignac number, because 29128791941 - 2²² = 29124597637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29128791949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14564395970 + 14564395971.

It is an arithmetic number, because the mean of its divisors is an integer number (14564395971).

Almost surely, 2^29128791941 is an apocalyptic number.

It is an amenable number.

29128791941 is a deficient number, since it is larger than the sum of its proper divisors (1).

29128791941 is an equidigital number, since it uses as much as digits as its factorization.

29128791941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 53.

The spelling of 29128791941 in words is "twenty-nine billion, one hundred twenty-eight million, seven hundred ninety-one thousand, nine hundred forty-one".