621237316474369 has 16 divisors (see below), whose sum is σ = 712920014352000. Its totient is φ = 530288876304000.

The previous prime is 621237316474343. The next prime is 621237316474381. The reversal of 621237316474369 is 963474613732126.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 621237316474369 - 2¹³ = 621237316466177 is a prime.

It is a super-2 number, since 2×621237316474369² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 621237316474369.

It is not an unprimeable number, because it can be changed into a prime (621237316474309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14427244 + ... + 38087005.

It is an arithmetic number, because the mean of its divisors is an integer number (44557500897000).

Almost surely, 2^{621237316474369} is an apocalyptic number.

It is an amenable number.

621237316474369 is a deficient number, since it is larger than the sum of its proper divisors (91682697877631).

621237316474369 is a wasteful number, since it uses less digits than its factorization.

621237316474369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52521240.

The product of its digits is 164602368, while the sum is 64.

The spelling of 621237316474369 in words is "six hundred twenty-one trillion, two hundred thirty-seven billion, three hundred sixteen million, four hundred seventy-four thousand, three hundred sixty-nine".