21833518540388 has 48 divisors (see below), whose sum is σ = 38693818848384. Its totient is φ = 10778704020480.

The previous prime is 21833518540373. The next prime is 21833518540441. The reversal of 21833518540388 is 88304581533812.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283989593 + ... + 284066463.

It is an arithmetic number, because the mean of its divisors is an integer number (806121226008).

Almost surely, 2^{21833518540388} is an apocalyptic number.

It is an amenable number.

21833518540388 is a deficient number, since it is larger than the sum of its proper divisors (16860300307996).

21833518540388 is a wasteful number, since it uses less digits than its factorization.

21833518540388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78692 (or 78690 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 59.

The spelling of 21833518540388 in words is "twenty-one trillion, eight hundred thirty-three billion, five hundred eighteen million, five hundred forty thousand, three hundred eighty-eight".