29278118313 has 6 divisors (see below), whose sum is σ = 42290615354. Its totient is φ = 19518745536.

The previous prime is 29278118291. The next prime is 29278118357. The reversal of 29278118313 is 31381187292.

It can be written as a sum of positive squares in only one way, i.e., 17329879449 + 11948238864 = 131643^2 + 109308^2 .

It is not a de Polignac number, because 29278118313 - 2⁵ = 29278118281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29278118393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1626562120 + ... + 1626562137.

Almost surely, 2^29278118313 is an apocalyptic number.

It is an amenable number.

29278118313 is a deficient number, since it is larger than the sum of its proper divisors (13012497041).

29278118313 is a wasteful number, since it uses less digits than its factorization.

29278118313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253124263 (or 3253124260 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 29278118313 in words is "twenty-nine billion, two hundred seventy-eight million, one hundred eighteen thousand, three hundred thirteen".