461050040021 has 2 divisors, whose sum is σ = 461050040022. Its totient is φ = 461050040020.

The previous prime is 461050039943. The next prime is 461050040093. The reversal of 461050040021 is 120040050164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 416089502500 + 44960537521 = 645050^2 + 212039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461050040021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461050045021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230525020010 + 230525020011.

It is an arithmetic number, because the mean of its divisors is an integer number (230525020011).

Almost surely, 2^461050040021 is an apocalyptic number.

It is an amenable number.

461050040021 is a deficient number, since it is larger than the sum of its proper divisors (1).

461050040021 is an equidigital number, since it uses as much as digits as its factorization.

461050040021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 461050040021 its reverse (120040050164), we get a palindrome (581090090185).

The spelling of 461050040021 in words is "four hundred sixty-one billion, fifty million, forty thousand, twenty-one".