281622880056 has 256 divisors, whose sum is σ = 876572789760. Its totient is φ = 73574645760.

The previous prime is 281622880043. The next prime is 281622880069. The reversal of 281622880056 is 650088226182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (281622880043) and next prime (281622880069).

It is a super-2 number, since 2×281622880056² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 281622879987 and 281622880014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13958616 + ... + 13978776.

It is an arithmetic number, because the mean of its divisors is an integer number (3424112460).

Almost surely, 2^281622880056 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 281622880056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (438286394880).

281622880056 is an abundant number, since it is smaller than the sum of its proper divisors (594949909704).

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

281622880056 is a wasteful number, since it uses less digits than its factorization.

281622880056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20334 (or 20330 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 281622880056 in words is "two hundred eighty-one billion, six hundred twenty-two million, eight hundred eighty thousand, fifty-six".