21623052426170 has 16 divisors (see below), whose sum is σ = 41915455472520. Its totient is φ = 7983896280384.

The previous prime is 21623052426127. The next prime is 21623052426179. The reversal of 21623052426170 is 7162425032612.

It can be written as a sum of positive squares in 4 ways, for example, as 16543018770721 + 5080033655449 = 4067311^2 + 2253893^2 .

It is not an unprimeable number, because it can be changed into a prime (21623052426179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83165586125 + ... + 83165586384.

Almost surely, 2^{21623052426170} is an apocalyptic number.

21623052426170 is a deficient number, since it is larger than the sum of its proper divisors (20292403046350).

21623052426170 is a wasteful number, since it uses less digits than its factorization.

21623052426170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166331172529.

The product of its (nonzero) digits is 241920, while the sum is 41.

Adding to 21623052426170 its reverse (7162425032612), we get a palindrome (28785477458782).

The spelling of 21623052426170 in words is "twenty-one trillion, six hundred twenty-three billion, fifty-two million, four hundred twenty-six thousand, one hundred seventy".