28255992863616 has 1536 divisors, whose sum is σ = 102456401040000. Its totient is φ = 7633258020864.

The previous prime is 28255992863611. The next prime is 28255992863617. The reversal of 28255992863616 is 61636829955282.

28255992863616 is a `hidden beast` number, since 2 + 8 + 2 + 5 + 599 + 28 + 6 + 3 + 6 + 1 + 6 = 666.

It is a super-2 number, since 2×28255992863616² (a number of 28 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28255992863611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 96436835566 + ... + 96436835858.

Almost surely, 2^{28255992863616} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28255992863616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51228200520000).

28255992863616 is an abundant number, since it is smaller than the sum of its proper divisors (74200408176384).

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

28255992863616 is a wasteful number, since it uses less digits than its factorization.

28255992863616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 676 counting only the distinct ones).

The product of its digits is 671846400, while the sum is 72.

The spelling of 28255992863616 in words is "twenty-eight trillion, two hundred fifty-five billion, nine hundred ninety-two million, eight hundred sixty-three thousand, six hundred sixteen".