165626313423623 has 12 divisors (see below), whose sum is σ = 188248616200008. Its totient is φ = 144839205257040.

The previous prime is 165626313423563. The next prime is 165626313423647. The reversal of 165626313423623 is 326324313626561.

165626313423623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165626313423623 - 2⁶ = 165626313423559 is a prime.

It is a super-2 number, since 2×165626313423623² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165626313423673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17646097313 + ... + 17646106698.

It is an arithmetic number, because the mean of its divisors is an integer number (15687384683334).

Almost surely, 2^{165626313423623} is an apocalyptic number.

165626313423623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

165626313423623 is a deficient number, since it is larger than the sum of its proper divisors (22622302776385).

165626313423623 is a wasteful number, since it uses less digits than its factorization.

165626313423623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35292204062 (or 35292204043 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 53.

The spelling of 165626313423623 in words is "one hundred sixty-five trillion, six hundred twenty-six billion, three hundred thirteen million, four hundred twenty-three thousand, six hundred twenty-three".