621226646450 has 12 divisors (see below), whose sum is σ = 1155481562490. Its totient is φ = 248490658560.

The previous prime is 621226646389. The next prime is 621226646461. The reversal of 621226646450 is 54646622126.

It can be written as a sum of positive squares in 3 ways, for example, as 471945642289 + 149281004161 = 686983^2 + 386369^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6212266415 + ... + 6212266514.

Almost surely, 2^621226646450 is an apocalyptic number.

621226646450 is a deficient number, since it is larger than the sum of its proper divisors (534254916040).

621226646450 is a wasteful number, since it uses less digits than its factorization.

621226646450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12424532941 (or 12424532936 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 621226646450 in words is "six hundred twenty-one billion, two hundred twenty-six million, six hundred forty-six thousand, four hundred fifty".