21133487787192 has 192 divisors, whose sum is σ = 65357607369600. Its totient is φ = 6344235239040.

The previous prime is 21133487787179. The next prime is 21133487787193. The reversal of 21133487787192 is 29178778433112.

21133487787192 is a `hidden beast` number, since 2 + 1 + 1 + 334 + 87 + 78 + 71 + 92 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133487787193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2330067 + ... + 6906242.

It is an arithmetic number, because the mean of its divisors is an integer number (340404205050).

Almost surely, 2^{21133487787192} is an apocalyptic number.

21133487787192 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21133487787192 is an abundant number, since it is smaller than the sum of its proper divisors (44224119582408).

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

21133487787192 is a wasteful number, since it uses less digits than its factorization.

21133487787192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236448 (or 9236432 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The spelling of 21133487787192 in words is "twenty-one trillion, one hundred thirty-three billion, four hundred eighty-seven million, seven hundred eighty-seven thousand, one hundred ninety-two".