281150252040 has 128 divisors (see below), whose sum is σ = 1020646344960. Its totient is φ = 60482740224.

The previous prime is 281150251999. The next prime is 281150252041. The reversal of 281150252040 is 40252051182.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 281150251989 and 281150252007.

It is not an unprimeable number, because it can be changed into a prime (281150252041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9829917 + ... + 9858476.

It is an arithmetic number, because the mean of its divisors is an integer number (7973799570).

Almost surely, 2^281150252040 is an apocalyptic number.

281150252040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

281150252040 is an abundant number, since it is smaller than the sum of its proper divisors (739496092920).

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

281150252040 is a wasteful number, since it uses less digits than its factorization.

281150252040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19688431 (or 19688427 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The spelling of 281150252040 in words is "two hundred eighty-one billion, one hundred fifty million, two hundred fifty-two thousand, forty".