29681694469 has 4 divisors (see below), whose sum is σ = 33921936544. Its totient is φ = 25441452396.

The previous prime is 29681694467. The next prime is 29681694481. The reversal of 29681694469 is 96449618692.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29681694469 - 2¹ = 29681694467 is a prime.

It is a super-2 number, since 2×29681694469² (a number of 22 digits) contains 22 as substring.

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 29681694469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29681694461) 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, 2120121027 + ... + 2120121040.

It is an arithmetic number, because the mean of its divisors is an integer number (8480484136).

Almost surely, 2^29681694469 is an apocalyptic number.

It is an amenable number.

29681694469 is a deficient number, since it is larger than the sum of its proper divisors (4240242075).

29681694469 is an equidigital number, since it uses as much as digits as its factorization.

29681694469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240242074.

The product of its digits is 40310784, while the sum is 64.

The spelling of 29681694469 in words is "twenty-nine billion, six hundred eighty-one million, six hundred ninety-four thousand, four hundred sixty-nine".