29139265918591 has 2 divisors, whose sum is σ = 29139265918592. Its totient is φ = 29139265918590.

The previous prime is 29139265918561. The next prime is 29139265918661. The reversal of 29139265918591 is 19581956293192.

It is an a-pointer prime, because the next prime (29139265918661) can be obtained adding 29139265918591 to its sum of digits (70).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29139265918591 - 2¹³ = 29139265910399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29139265918591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29139265918561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14569632959295 + 14569632959296.

It is an arithmetic number, because the mean of its divisors is an integer number (14569632959296).

Almost surely, 2^{29139265918591} is an apocalyptic number.

29139265918591 is a deficient number, since it is larger than the sum of its proper divisors (1).

29139265918591 is an equidigital number, since it uses as much as digits as its factorization.

29139265918591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94478400, while the sum is 70.

The spelling of 29139265918591 in words is "twenty-nine trillion, one hundred thirty-nine billion, two hundred sixty-five million, nine hundred eighteen thousand, five hundred ninety-one".