28451970077850 has 480 divisors, whose sum is σ = 87162609485952. Its totient is φ = 6824139840000.

The previous prime is 28451970077813. The next prime is 28451970077893. The reversal of 28451970077850 is 5877007915482.

28451970077850 is a `hidden beast` number, since 28 + 451 + 97 + 0 + 0 + 7 + 78 + 5 + 0 = 666.

It is an unprimeable number.

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 239 ways as a sum of consecutive naturals, for example, 1588510395 + ... + 1588528305.

Almost surely, 2^{28451970077850} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28451970077850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43581304742976).

28451970077850 is an abundant number, since it is smaller than the sum of its proper divisors (58710639408102).

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

28451970077850 is a wasteful number, since it uses less digits than its factorization.

28451970077850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18324 (or 18310 counting only the distinct ones).

The product of its (nonzero) digits is 39513600, while the sum is 63.

The spelling of 28451970077850 in words is "twenty-eight trillion, four hundred fifty-one billion, nine hundred seventy million, seventy-seven thousand, eight hundred fifty".