162610634561 has 2 divisors, whose sum is σ = 162610634562. Its totient is φ = 162610634560.

The previous prime is 162610634479. The next prime is 162610634573. The reversal of 162610634561 is 165436016261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89180474161 + 73430160400 = 298631^2 + 270980^2 .

It is an emirp because it is prime and its reverse (165436016261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162610634561 - 2¹⁸ = 162610372417 is a prime.

It is not a weakly prime, because it can be changed into another prime (162610634581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81305317280 + 81305317281.

It is an arithmetic number, because the mean of its divisors is an integer number (81305317281).

Almost surely, 2^162610634561 is an apocalyptic number.

It is an amenable number.

162610634561 is a deficient number, since it is larger than the sum of its proper divisors (1).

162610634561 is an equidigital number, since it uses as much as digits as its factorization.

162610634561 is an evil number, because the sum of its binary digits is even.

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

The spelling of 162610634561 in words is "one hundred sixty-two billion, six hundred ten million, six hundred thirty-four thousand, five hundred sixty-one".