621116400002 has 12 divisors (see below), whose sum is σ = 1083784738950. Its totient is φ = 266192742816.

The previous prime is 621116400001. The next prime is 621116400011. The reversal of 621116400002 is 200004611126.

It can be written as a sum of positive squares in only one way, i.e., 614469422161 + 6646977841 = 783881^2 + 81529^2 .

It is not an unprimeable number, because it can be changed into a prime (621116400001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3168961127 + ... + 3168961322.

Almost surely, 2^621116400002 is an apocalyptic number.

621116400002 is a deficient number, since it is larger than the sum of its proper divisors (462668338948).

621116400002 is a wasteful number, since it uses less digits than its factorization.

621116400002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6337922465 (or 6337922458 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 621116400002 in words is "six hundred twenty-one billion, one hundred sixteen million, four hundred thousand, two".