281052900000 has 216 divisors, whose sum is σ = 998994489948. Its totient is φ = 74947200000.

The previous prime is 281052899989. The next prime is 281052900041. The reversal of 281052900000 is 9250182.

It can be written as a sum of positive squares in 6 ways, for example, as 12824203536 + 268228696464 = 113244^2 + 517908^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 743860 + ... + 1056140.

Almost surely, 2^281052900000 is an apocalyptic number.

281052900000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281052900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499497244974).

281052900000 is an abundant number, since it is smaller than the sum of its proper divisors (717941589948).

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

281052900000 is an equidigital number, since it uses as much as digits as its factorization.

281052900000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312322 (or 312291 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 281052900000 in words is "two hundred eighty-one billion, fifty-two million, nine hundred thousand".