21440331034 has 8 divisors (see below), whose sum is σ = 32257659168. Its totient is φ = 10687777980.

The previous prime is 21440331013. The next prime is 21440331067. The reversal of 21440331034 is 43013304412.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16192942 + ... + 16194265.

It is an arithmetic number, because the mean of its divisors is an integer number (4032207396).

Almost surely, 2^21440331034 is an apocalyptic number.

21440331034 is a deficient number, since it is larger than the sum of its proper divisors (10817328134).

21440331034 is a wasteful number, since it uses less digits than its factorization.

21440331034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32387540.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21440331034 its reverse (43013304412), we get a palindrome (64453635446).

The spelling of 21440331034 in words is "twenty-one billion, four hundred forty million, three hundred thirty-one thousand, thirty-four".