161562453583 has 2 divisors, whose sum is σ = 161562453584. Its totient is φ = 161562453582.

The previous prime is 161562453557. The next prime is 161562453607. The reversal of 161562453583 is 385354265161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161562453583 is a prime.

It is a super-2 number, since 2×161562453583² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161562453383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80781226791 + 80781226792.

It is an arithmetic number, because the mean of its divisors is an integer number (80781226792).

Almost surely, 2^161562453583 is an apocalyptic number.

161562453583 is a deficient number, since it is larger than the sum of its proper divisors (1).

161562453583 is an equidigital number, since it uses as much as digits as its factorization.

161562453583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 49.

The spelling of 161562453583 in words is "one hundred sixty-one billion, five hundred sixty-two million, four hundred fifty-three thousand, five hundred eighty-three".