28861563412 has 48 divisors (see below), whose sum is σ = 55434798720. Its totient is φ = 13039228800.

The previous prime is 28861563383. The next prime is 28861563431. The reversal of 28861563412 is 21436516882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6819337 + ... + 6823567.

It is an arithmetic number, because the mean of its divisors is an integer number (1154891640).

Almost surely, 2^28861563412 is an apocalyptic number.

28861563412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28861563412 is a deficient number, since it is larger than the sum of its proper divisors (26573235308).

28861563412 is a wasteful number, since it uses less digits than its factorization.

28861563412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152 (or 5150 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The spelling of 28861563412 in words is "twenty-eight billion, eight hundred sixty-one million, five hundred sixty-three thousand, four hundred twelve".