621560611666341 has 12 divisors (see below), whose sum is σ = 899018130118368. Its totient is φ = 413816037551784.

The previous prime is 621560611666339. The next prime is 621560611666361. The reversal of 621560611666341 is 143666116065126.

It is not a de Polignac number, because 621560611666341 - 2¹ = 621560611666339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621560611666361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46475289535 + ... + 46475302908.

It is an arithmetic number, because the mean of its divisors is an integer number (74918177509864).

Almost surely, 2^{621560611666341} is an apocalyptic number.

It is an amenable number.

621560611666341 is a deficient number, since it is larger than the sum of its proper divisors (277457518452027).

621560611666341 is a wasteful number, since it uses less digits than its factorization.

621560611666341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92950593192 (or 92950593189 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 621560611666341 in words is "six hundred twenty-one trillion, five hundred sixty billion, six hundred eleven million, six hundred sixty-six thousand, three hundred forty-one".