21337955488773 has 48 divisors (see below), whose sum is σ = 38427541641216. Its totient is φ = 11084436623520.

The previous prime is 21337955488711. The next prime is 21337955488901. The reversal of 21337955488773 is 37788455973312.

21337955488773 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 7 + 9 + 5 + 548 + 8 + 7 + 73 = 666.

It is not a de Polignac number, because 21337955488773 - 2⁹ = 21337955488261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21337955488673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39096240 + ... + 39638262.

It is an arithmetic number, because the mean of its divisors is an integer number (800573784192).

Almost surely, 2^{21337955488773} is an apocalyptic number.

It is an amenable number.

21337955488773 is a deficient number, since it is larger than the sum of its proper divisors (17089586152443).

21337955488773 is a wasteful number, since it uses less digits than its factorization.

21337955488773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598854 (or 598851 counting only the distinct ones).

The product of its digits is 1066867200, while the sum is 72.

The spelling of 21337955488773 in words is "twenty-one trillion, three hundred thirty-seven billion, nine hundred fifty-five million, four hundred eighty-eight thousand, seven hundred seventy-three".