411254501621 has 2 divisors, whose sum is σ = 411254501622. Its totient is φ = 411254501620.

The previous prime is 411254501617. The next prime is 411254501653. The reversal of 411254501621 is 126105452114.

It is a happy number.

It is an a-pointer prime, because the next prime (411254501653) can be obtained adding 411254501621 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 357826490596 + 53428011025 = 598186^2 + 231145^2 .

It is a cyclic number.

It is not a de Polignac number, because 411254501621 - 2² = 411254501617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (411254501321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205627250810 + 205627250811.

It is an arithmetic number, because the mean of its divisors is an integer number (205627250811).

Almost surely, 2^411254501621 is an apocalyptic number.

It is an amenable number.

411254501621 is a deficient number, since it is larger than the sum of its proper divisors (1).

411254501621 is an equidigital number, since it uses as much as digits as its factorization.

411254501621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 411254501621 its reverse (126105452114), we get a palindrome (537359953735).

The spelling of 411254501621 in words is "four hundred eleven billion, two hundred fifty-four million, five hundred one thousand, six hundred twenty-one".