621549488226 has 16 divisors (see below), whose sum is σ = 1244437092000. Its totient is φ = 206960143488.

The previous prime is 621549488201. The next prime is 621549488227. The reversal of 621549488226 is 622884945126.

It is not an unprimeable number, because it can be changed into a prime (621549488227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55748776 + ... + 55759923.

It is an arithmetic number, because the mean of its divisors is an integer number (77777318250).

Almost surely, 2^621549488226 is an apocalyptic number.

621549488226 is an abundant number, since it is smaller than the sum of its proper divisors (622887603774).

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

621549488226 is a wasteful number, since it uses less digits than its factorization.

621549488226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111509633.

The product of its digits is 13271040, while the sum is 57.

The spelling of 621549488226 in words is "six hundred twenty-one billion, five hundred forty-nine million, four hundred eighty-eight thousand, two hundred twenty-six".