21033404514 has 32 divisors (see below), whose sum is σ = 47399230080. Its totient is φ = 6912385200.

The previous prime is 21033404477. The next prime is 21033404521. The reversal of 21033404514 is 41540433012.

It is a happy number.

21033404514 is a `hidden beast` number, since 2 + 103 + 3 + 40 + 4 + 514 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 2739177 + ... + 2746844.

It is an arithmetic number, because the mean of its divisors is an integer number (1481225940).

Almost surely, 2^21033404514 is an apocalyptic number.

21033404514 is an abundant number, since it is smaller than the sum of its proper divisors (26365825566).

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

21033404514 is a wasteful number, since it uses less digits than its factorization.

21033404514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5486103 (or 5486097 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 21033404514 its reverse (41540433012), we get a palindrome (62573837526).

The spelling of 21033404514 in words is "twenty-one billion, thirty-three million, four hundred four thousand, five hundred fourteen".