162603761521 has 2 divisors, whose sum is σ = 162603761522. Its totient is φ = 162603761520.

The previous prime is 162603761479. The next prime is 162603761543. The reversal of 162603761521 is 125167306261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103134111025 + 59469650496 = 321145^2 + 243864^2 .

It is a cyclic number.

It is not a de Polignac number, because 162603761521 - 2⁷ = 162603761393 is a prime.

It is not a weakly prime, because it can be changed into another prime (162603762521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81301880760 + 81301880761.

It is an arithmetic number, because the mean of its divisors is an integer number (81301880761).

Almost surely, 2^162603761521 is an apocalyptic number.

It is an amenable number.

162603761521 is a deficient number, since it is larger than the sum of its proper divisors (1).

162603761521 is an equidigital number, since it uses as much as digits as its factorization.

162603761521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 162603761521 in words is "one hundred sixty-two billion, six hundred three million, seven hundred sixty-one thousand, five hundred twenty-one".