28761185313 has 24 divisors (see below), whose sum is σ = 47508604416. Its totient is φ = 16424640000.

The previous prime is 28761185309. The next prime is 28761185329. The reversal of 28761185313 is 31358116782.

It is a happy number.

28761185313 is a `hidden beast` number, since 28 + 7 + 611 + 8 + 5 + 3 + 1 + 3 = 666.

It is not a de Polignac number, because 28761185313 - 2² = 28761185309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28761185333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41713 + ... + 243438.

It is an arithmetic number, because the mean of its divisors is an integer number (1979525184).

Almost surely, 2^28761185313 is an apocalyptic number.

It is an amenable number.

28761185313 is a deficient number, since it is larger than the sum of its proper divisors (18747419103).

28761185313 is a wasteful number, since it uses less digits than its factorization.

28761185313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286765 (or 286762 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 28761185313 in words is "twenty-eight billion, seven hundred sixty-one million, one hundred eighty-five thousand, three hundred thirteen".