28677847481999 has 8 divisors (see below), whose sum is σ = 28861230709248. Its totient is φ = 28494912078360.

The previous prime is 28677847481951. The next prime is 28677847482019. The reversal of 28677847481999 is 99918474877682.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28677847481999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28677847481909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111827417 + ... + 112083570.

It is an arithmetic number, because the mean of its divisors is an integer number (3607653838656).

Almost surely, 2^{28677847481999} is an apocalyptic number.

28677847481999 is a deficient number, since it is larger than the sum of its proper divisors (183383227249).

28677847481999 is a wasteful number, since it uses less digits than its factorization.

28677847481999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223911805.

The product of its digits is 24580620288, while the sum is 89.

The spelling of 28677847481999 in words is "twenty-eight trillion, six hundred seventy-seven billion, eight hundred forty-seven million, four hundred eighty-one thousand, nine hundred ninety-nine".