621226136041 has 27 divisors (see below), whose sum is σ = 730048184901. Its totient is φ = 527083671744.

The previous prime is 621226136039. The next prime is 621226136059. The reversal of 621226136041 is 140631622126.

The square root of 621226136041 is 788179.

It is a perfect power (a square), and thus also a powerful number.

621226136041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 320259787225 + 300966348816 = 565915^2 + 548604^2 .

It is not a de Polignac number, because 621226136041 - 2¹ = 621226136039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 621226135988 and 621226136006.

It is not an unprimeable number, because it can be changed into a prime (621226136081) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 601380061 + ... + 601381093.

It is an arithmetic number, because the mean of its divisors is an integer number (27038821663).

Almost surely, 2^621226136041 is an apocalyptic number.

621226136041 is the 788179-th square number.

621226136041 is the 394090-th centered octagonal number.

It is an amenable number.

621226136041 is a deficient number, since it is larger than the sum of its proper divisors (108822048860).

621226136041 is an frugal number, since it uses more digits than its factorization.

621226136041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298 (or 1149 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 621226136041 its reverse (140631622126), we get a palindrome (761857758167).

The spelling of 621226136041 in words is "six hundred twenty-one billion, two hundred twenty-six million, one hundred thirty-six thousand, forty-one".