581261146880 has 36 divisors (see below), whose sum is σ = 1392302093952. Its totient is φ = 232504458240.

The previous prime is 581261146861. The next prime is 581261146889. The reversal of 581261146880 is 88641162185.

It is not an unprimeable number, because it can be changed into a prime (581261146889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227053856 + ... + 227056415.

Almost surely, 2^581261146880 is an apocalyptic number.

It is an amenable number.

581261146880 is an abundant number, since it is smaller than the sum of its proper divisors (811040947072).

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

581261146880 is an equidigital number, since it uses as much as digits as its factorization.

581261146880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454110292 (or 454110278 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 50.

The spelling of 581261146880 in words is "five hundred eighty-one billion, two hundred sixty-one million, one hundred forty-six thousand, eight hundred eighty".