21388483174 has 8 divisors (see below), whose sum is σ = 32083571088. Its totient is φ = 10693959480.

The previous prime is 21388483099. The next prime is 21388483177. The reversal of 21388483174 is 47138488312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21388483174² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21388483177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28237 + ... + 208744.

It is an arithmetic number, because the mean of its divisors is an integer number (4010446386).

Almost surely, 2^21388483174 is an apocalyptic number.

21388483174 is a deficient number, since it is larger than the sum of its proper divisors (10695087914).

21388483174 is a wasteful number, since it uses less digits than its factorization.

21388483174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282110.

The product of its digits is 1032192, while the sum is 49.

The spelling of 21388483174 in words is "twenty-one billion, three hundred eighty-eight million, four hundred eighty-three thousand, one hundred seventy-four".