461511622081 has 2 divisors, whose sum is σ = 461511622082. Its totient is φ = 461511622080.

The previous prime is 461511622073. The next prime is 461511622129. The reversal of 461511622081 is 180226115164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303711210000 + 157800412081 = 551100^2 + 397241^2 .

It is a cyclic number.

It is not a de Polignac number, because 461511622081 - 2³ = 461511622073 is a prime.

It is a super-2 number, since 2×461511622081² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 461511622081.

It is not a weakly prime, because it can be changed into another prime (461511622021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230755811040 + 230755811041.

It is an arithmetic number, because the mean of its divisors is an integer number (230755811041).

Almost surely, 2^461511622081 is an apocalyptic number.

It is an amenable number.

461511622081 is a deficient number, since it is larger than the sum of its proper divisors (1).

461511622081 is an equidigital number, since it uses as much as digits as its factorization.

461511622081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 461511622081 in words is "four hundred sixty-one billion, five hundred eleven million, six hundred twenty-two thousand, eighty-one".