29427955885 has 4 divisors (see below), whose sum is σ = 35313547068. Its totient is φ = 23542364704.

The previous prime is 29427955831. The next prime is 29427955913. The reversal of 29427955885 is 58855972492.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18893602116 + 10534353769 = 137454^2 + 102637^2 .

It is a cyclic number.

It is not a de Polignac number, because 29427955885 - 2¹¹ = 29427953837 is a prime.

It is a super-2 number, since 2×29427955885² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2942795584 + ... + 2942795593.

It is an arithmetic number, because the mean of its divisors is an integer number (8828386767).

Almost surely, 2^29427955885 is an apocalyptic number.

It is an amenable number.

29427955885 is a deficient number, since it is larger than the sum of its proper divisors (5885591183).

29427955885 is an equidigital number, since it uses as much as digits as its factorization.

29427955885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5885591182.

The product of its digits is 72576000, while the sum is 64.

The spelling of 29427955885 in words is "twenty-nine billion, four hundred twenty-seven million, nine hundred fifty-five thousand, eight hundred eighty-five".