21040403150 has 24 divisors (see below), whose sum is σ = 42145547304. Its totient is φ = 7768764000.

The previous prime is 21040403129. The next prime is 21040403183. The reversal of 21040403150 is 5130404012.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 16184276 + ... + 16185575.

It is an arithmetic number, because the mean of its divisors is an integer number (1756064471).

Almost surely, 2^21040403150 is an apocalyptic number.

21040403150 is an abundant number, since it is smaller than the sum of its proper divisors (21105144154).

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

21040403150 is a wasteful number, since it uses less digits than its factorization.

21040403150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32369876 (or 32369871 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 21040403150 its reverse (5130404012), we get a palindrome (26170807162).

The spelling of 21040403150 in words is "twenty-one billion, forty million, four hundred three thousand, one hundred fifty".