28601615912 has 16 divisors (see below), whose sum is σ = 53631327840. Its totient is φ = 14299928496.

The previous prime is 28601615899. The next prime is 28601615921. The reversal of 28601615912 is 21951610682.

It is a self number, because there is not a number n which added to its sum of digits gives 28601615912.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40373 + ... + 242555.

It is an arithmetic number, because the mean of its divisors is an integer number (3351957990).

Almost surely, 2^28601615912 is an apocalyptic number.

It is an amenable number.

28601615912 is a deficient number, since it is larger than the sum of its proper divisors (25029711928).

28601615912 is a wasteful number, since it uses less digits than its factorization.

28601615912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219872 (or 219868 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 28601615912 in words is "twenty-eight billion, six hundred one million, six hundred fifteen thousand, nine hundred twelve".