621363050861 has 6 divisors (see below), whose sum is σ = 722810079630. Its totient is φ = 532596900696.

The previous prime is 621363050851. The next prime is 621363050863. The reversal of 621363050861 is 168050363126.

It can be written as a sum of positive squares in only one way, i.e., 613372478761 + 7990572100 = 783181^2 + 89390^2 .

It is not a de Polignac number, because 621363050861 - 2¹⁴ = 621363034477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621363050863) 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, 6340439246 + ... + 6340439343.

It is an arithmetic number, because the mean of its divisors is an integer number (120468346605).

Almost surely, 2^621363050861 is an apocalyptic number.

It is an amenable number.

621363050861 is a deficient number, since it is larger than the sum of its proper divisors (101447028769).

621363050861 is a wasteful number, since it uses less digits than its factorization.

621363050861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12680878603 (or 12680878596 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 621363050861 in words is "six hundred twenty-one billion, three hundred sixty-three million, fifty thousand, eight hundred sixty-one".