28099126688 has 12 divisors (see below), whose sum is σ = 55320155730. Its totient is φ = 14049563328.

The previous prime is 28099126669. The next prime is 28099126729. The reversal of 28099126688 is 88662199082.

It can be written as a sum of positive squares in only one way, i.e., 27799559824 + 299566864 = 166732^2 + 17308^2 .

It is a super-3 number, since 3×28099126688³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439048823 + ... + 439048886.

Almost surely, 2^28099126688 is an apocalyptic number.

It is an amenable number.

28099126688 is a deficient number, since it is larger than the sum of its proper divisors (27221029042).

28099126688 is an equidigital number, since it uses as much as digits as its factorization.

28099126688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878097719 (or 878097711 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 59.

The spelling of 28099126688 in words is "twenty-eight billion, ninety-nine million, one hundred twenty-six thousand, six hundred eighty-eight".