621549488228 has 24 divisors (see below), whose sum is σ = 1100449808640. Its totient is φ = 307155310560.

The previous prime is 621549488227. The next prime is 621549488249. The reversal of 621549488228 is 822884945126.

It is a happy number.

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, 2382503 + ... + 2630478.

It is an arithmetic number, because the mean of its divisors is an integer number (45852075360).

Almost surely, 2^621549488228 is an apocalyptic number.

It is an amenable number.

621549488228 is a deficient number, since it is larger than the sum of its proper divisors (478900320412).

621549488228 is a wasteful number, since it uses less digits than its factorization.

621549488228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5013347 (or 5013345 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 59.

The spelling of 621549488228 in words is "six hundred twenty-one billion, five hundred forty-nine million, four hundred eighty-eight thousand, two hundred twenty-eight".