29133728391 has 4 divisors (see below), whose sum is σ = 38844971192. Its totient is φ = 19422485592.

The previous prime is 29133728357. The next prime is 29133728399. The reversal of 29133728391 is 19382733192.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 29133728391 - 2¹⁴ = 29133712007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29133728391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29133728399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4855621396 + ... + 4855621401.

It is an arithmetic number, because the mean of its divisors is an integer number (9711242798).

Almost surely, 2^29133728391 is an apocalyptic number.

29133728391 is a deficient number, since it is larger than the sum of its proper divisors (9711242801).

29133728391 is an equidigital number, since it uses as much as digits as its factorization.

29133728391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9711242800.

The product of its digits is 489888, while the sum is 48.

The spelling of 29133728391 in words is "twenty-nine billion, one hundred thirty-three million, seven hundred twenty-eight thousand, three hundred ninety-one".