21962656969173 has 32 divisors (see below), whose sum is σ = 35430783600000. Its totient is φ = 13392836182656.

The previous prime is 21962656969147. The next prime is 21962656969189. The reversal of 21962656969173 is 37196965626912.

21962656969173 is a `hidden beast` number, since 2 + 196 + 265 + 6 + 9 + 6 + 9 + 173 = 666.

It is not a de Polignac number, because 21962656969173 - 2⁶ = 21962656969109 is a prime.

It is a super-2 number, since 2×21962656969173² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21962656969133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738126448 + ... + 738156201.

It is an arithmetic number, because the mean of its divisors is an integer number (1107211987500).

Almost surely, 2^{21962656969173} is an apocalyptic number.

It is an amenable number.

21962656969173 is a deficient number, since it is larger than the sum of its proper divisors (13468126630827).

21962656969173 is a wasteful number, since it uses less digits than its factorization.

21962656969173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476282706 (or 1476282700 counting only the distinct ones).

The product of its digits is 396809280, while the sum is 72.

The spelling of 21962656969173 in words is "twenty-one trillion, nine hundred sixty-two billion, six hundred fifty-six million, nine hundred sixty-nine thousand, one hundred seventy-three".