21317750880192 has 280 divisors, whose sum is σ = 70248732321152. Its totient is φ = 6347716761600.

The previous prime is 21317750880191. The next prime is 21317750880193. The reversal of 21317750880192 is 29108805771312.

21317750880192 is a `hidden beast` number, since 21 + 31 + 7 + 7 + 508 + 80 + 1 + 9 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (21317750880191) and next prime (21317750880193).

It is a super-3 number, since 3×21317750880192³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21317750880191) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3012859 + ... + 7191162.

Almost surely, 2^{21317750880192} is an apocalyptic number.

It is an amenable number.

21317750880192 is an abundant number, since it is smaller than the sum of its proper divisors (48930981440960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21317750880192 is a wasteful number, since it uses less digits than its factorization.

21317750880192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10204089 (or 10204070 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 54.

The spelling of 21317750880192 in words is "twenty-one trillion, three hundred seventeen billion, seven hundred fifty million, eight hundred eighty thousand, one hundred ninety-two".