21289469150 has 12 divisors (see below), whose sum is σ = 39598412712. Its totient is φ = 8515787640.

The previous prime is 21289469147. The next prime is 21289469161. The reversal of 21289469150 is 5196498212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21289469095 and 21289469104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212894642 + ... + 212894741.

It is an arithmetic number, because the mean of its divisors is an integer number (3299867726).

Almost surely, 2^21289469150 is an apocalyptic number.

21289469150 is a deficient number, since it is larger than the sum of its proper divisors (18308943562).

21289469150 is a wasteful number, since it uses less digits than its factorization.

21289469150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425789395 (or 425789390 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 21289469150 in words is "twenty-one billion, two hundred eighty-nine million, four hundred sixty-nine thousand, one hundred fifty".