621799008342641 has 4 divisors (see below), whose sum is σ = 621895756288752. Its totient is φ = 621702260396532.

The previous prime is 621799008342637. The next prime is 621799008342649. The reversal of 621799008342641 is 146243800997126.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 621799008342641 - 2² = 621799008342637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621799008342649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48373963415 + ... + 48373976268.

It is an arithmetic number, because the mean of its divisors is an integer number (155473939072188).

Almost surely, 2^{621799008342641} is an apocalyptic number.

It is an amenable number.

621799008342641 is a deficient number, since it is larger than the sum of its proper divisors (96747946111).

621799008342641 is an equidigital number, since it uses as much as digits as its factorization.

621799008342641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96747946110.

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 621799008342641 in words is "six hundred twenty-one trillion, seven hundred ninety-nine billion, eight million, three hundred forty-two thousand, six hundred forty-one".