21958791269373 has 24 divisors (see below), whose sum is σ = 36510220510400. Its totient is φ = 12457608197184.

The previous prime is 21958791269351. The next prime is 21958791269413. The reversal of 21958791269373 is 37396219785912.

21958791269373 is a `hidden beast` number, since 2 + 1 + 9 + 587 + 9 + 1 + 2 + 6 + 9 + 37 + 3 = 666.

It is not a de Polignac number, because 21958791269373 - 2⁵ = 21958791269341 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21958791269333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1253776288 + ... + 1253793801.

Almost surely, 2^{21958791269373} is an apocalyptic number.

It is an amenable number.

21958791269373 is a deficient number, since it is larger than the sum of its proper divisors (14551429241027).

21958791269373 is a wasteful number, since it uses less digits than its factorization.

21958791269373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507570241 (or 2507570238 counting only the distinct ones).

The product of its digits is 308629440, while the sum is 72.

The spelling of 21958791269373 in words is "twenty-one trillion, nine hundred fifty-eight billion, seven hundred ninety-one million, two hundred sixty-nine thousand, three hundred seventy-three".