29440138513 has 2 divisors, whose sum is σ = 29440138514. Its totient is φ = 29440138512.

The previous prime is 29440138463. The next prime is 29440138523. The reversal of 29440138513 is 31583104492.

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., 21823561984 + 7616576529 = 147728^2 + 87273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29440138513 is a prime.

It is not a weakly prime, because it can be changed into another prime (29440138523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14720069256 + 14720069257.

It is an arithmetic number, because the mean of its divisors is an integer number (14720069257).

Almost surely, 2^29440138513 is an apocalyptic number.

It is an amenable number.

29440138513 is a deficient number, since it is larger than the sum of its proper divisors (1).

29440138513 is an equidigital number, since it uses as much as digits as its factorization.

29440138513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 29440138513 in words is "twenty-nine billion, four hundred forty million, one hundred thirty-eight thousand, five hundred thirteen".