165562234644623 has 2 divisors, whose sum is σ = 165562234644624. Its totient is φ = 165562234644622.

The previous prime is 165562234644589. The next prime is 165562234644629. The reversal of 165562234644623 is 326446432265561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165562234644623 - 2⁴⁰ = 164462723016847 is a prime.

It is a super-2 number, since 2×165562234644623² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165562234644629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82781117322311 + 82781117322312.

It is an arithmetic number, because the mean of its divisors is an integer number (82781117322312).

Almost surely, 2^{165562234644623} is an apocalyptic number.

165562234644623 is a deficient number, since it is larger than the sum of its proper divisors (1).

165562234644623 is an equidigital number, since it uses as much as digits as its factorization.

165562234644623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 149299200, while the sum is 59.

The spelling of 165562234644623 in words is "one hundred sixty-five trillion, five hundred sixty-two billion, two hundred thirty-four million, six hundred forty-four thousand, six hundred twenty-three".