621450220486 has 32 divisors (see below), whose sum is σ = 965270135808. Its totient is φ = 299757287520.

The previous prime is 621450220453. The next prime is 621450220511. The reversal of 621450220486 is 684022054126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64817385 + ... + 64826971.

It is an arithmetic number, because the mean of its divisors is an integer number (30164691744).

Almost surely, 2^621450220486 is an apocalyptic number.

621450220486 is a deficient number, since it is larger than the sum of its proper divisors (343819915322).

621450220486 is a wasteful number, since it uses less digits than its factorization.

621450220486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12796.

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 621450220486 in words is "six hundred twenty-one billion, four hundred fifty million, two hundred twenty thousand, four hundred eighty-six".