990541841256 has 96 divisors (see below), whose sum is σ = 2940471537120. Its totient is φ = 298741564800.

The previous prime is 990541841221. The next prime is 990541841273. The reversal of 990541841256 is 652148145099.

990541841256 is a `hidden beast` number, since 9 + 9 + 0 + 541 + 8 + 41 + 2 + 56 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2796595 + ... + 3130818.

It is an arithmetic number, because the mean of its divisors is an integer number (30629911845).

Almost surely, 2^990541841256 is an apocalyptic number.

It is an amenable number.

990541841256 is an abundant number, since it is smaller than the sum of its proper divisors (1949929695864).

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

990541841256 is a wasteful number, since it uses less digits than its factorization.

990541841256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5927647 (or 5927640 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 990541841256 in words is "nine hundred ninety billion, five hundred forty-one million, eight hundred forty-one thousand, two hundred fifty-six".