621837802244 has 12 divisors (see below), whose sum is σ = 1125740849100. Its totient is φ = 300197559648.

The previous prime is 621837802241. The next prime is 621837802247. The reversal of 621837802244 is 442208738126.

It is an interprime number because it is at equal distance from previous prime (621837802241) and next prime (621837802247).

It can be written as a sum of positive squares in 2 ways, for example, as 311098448644 + 310739353600 = 557762^2 + 557440^2 .

It is not an unprimeable number, because it can be changed into a prime (621837802241) 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 3 ways as a sum of consecutive naturals, for example, 2680335239 + ... + 2680335470.

It is an arithmetic number, because the mean of its divisors is an integer number (93811737425).

Almost surely, 2^621837802244 is an apocalyptic number.

It is an amenable number.

621837802244 is a deficient number, since it is larger than the sum of its proper divisors (503903046856).

621837802244 is a wasteful number, since it uses less digits than its factorization.

621837802244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5360670742 (or 5360670740 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 621837802244 in words is "six hundred twenty-one billion, eight hundred thirty-seven million, eight hundred two thousand, two hundred forty-four".