21489298412 has 12 divisors (see below), whose sum is σ = 37647558816. Its totient is φ = 10732853040.

The previous prime is 21489298393. The next prime is 21489298421.

21489298412 is nontrivially palindromic in base 10.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2944943 + ... + 2952230.

It is an arithmetic number, because the mean of its divisors is an integer number (3137296568).

Almost surely, 2^21489298412 is an apocalyptic number.

It is an amenable number.

21489298412 is a deficient number, since it is larger than the sum of its proper divisors (16158260404).

21489298412 is a wasteful number, since it uses less digits than its factorization.

21489298412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5898088 (or 5898086 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The spelling of 21489298412 in words is "twenty-one billion, four hundred eighty-nine million, two hundred ninety-eight thousand, four hundred twelve".