21623125604373 has 12 divisors (see below), whose sum is σ = 31233450799200. Its totient is φ = 14415395308776.

The previous prime is 21623125604309. The next prime is 21623125604401. The reversal of 21623125604373 is 37340652132612.

It is a happy number.

21623125604373 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 3 + 1 + 2 + 5 + 604 + 37 + 3 = 666.

It is not a de Polignac number, because 21623125604373 - 2⁶ = 21623125604309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21623125674373) 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, 6472528 + ... + 9227126.

It is an arithmetic number, because the mean of its divisors is an integer number (2602787566600).

Almost surely, 2^{21623125604373} is an apocalyptic number.

It is an amenable number.

21623125604373 is a deficient number, since it is larger than the sum of its proper divisors (9610325194827).

21623125604373 is a wasteful number, since it uses less digits than its factorization.

21623125604373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626808 (or 3626805 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

Adding to 21623125604373 its reverse (37340652132612), we get a palindrome (58963777736985).

The spelling of 21623125604373 in words is "twenty-one trillion, six hundred twenty-three billion, one hundred twenty-five million, six hundred four thousand, three hundred seventy-three".