28009751477976 has 32 divisors (see below), whose sum is σ = 77804865217200. Its totient is φ = 9336583825920.

The previous prime is 28009751477963. The next prime is 28009751477987. The reversal of 28009751477976 is 67977415790082.

28009751477976 is a `hidden beast` number, since 2 + 80 + 0 + 9 + 7 + 5 + 1 + 477 + 9 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64837387465 + ... + 64837387896.

Almost surely, 2^{28009751477976} is an apocalyptic number.

It is an amenable number.

28009751477976 is an abundant number, since it is smaller than the sum of its proper divisors (49795113739224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28009751477976 is a wasteful number, since it uses less digits than its factorization.

28009751477976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129674775376 (or 129674775366 counting only the distinct ones).

The product of its (nonzero) digits is 373403520, while the sum is 72.

The spelling of 28009751477976 in words is "twenty-eight trillion, nine billion, seven hundred fifty-one million, four hundred seventy-seven thousand, nine hundred seventy-six".