621342744080 has 20 divisors (see below), whose sum is σ = 1444621880172. Its totient is φ = 248537097600.

The previous prime is 621342744059. The next prime is 621342744103. The reversal of 621342744080 is 80447243126.

It can be written as a sum of positive squares in 2 ways, for example, as 126830001424 + 494512742656 = 356132^2 + 703216^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×621342744080³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3883392071 + ... + 3883392230.

Almost surely, 2^621342744080 is an apocalyptic number.

It is an amenable number.

621342744080 is an abundant number, since it is smaller than the sum of its proper divisors (823279136092).

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

621342744080 is a wasteful number, since it uses less digits than its factorization.

621342744080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7766784314 (or 7766784308 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 621342744080 in words is "six hundred twenty-one billion, three hundred forty-two million, seven hundred forty-four thousand, eighty".