21234163532 has 12 divisors (see below), whose sum is σ = 37160846520. Its totient is φ = 10616778816.

The previous prime is 21234163529. The next prime is 21234163541. The reversal of 21234163532 is 23536143212.

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, 172019 + ... + 268437.

It is an arithmetic number, because the mean of its divisors is an integer number (3096737210).

Almost surely, 2^21234163532 is an apocalyptic number.

It is an amenable number.

21234163532 is a deficient number, since it is larger than the sum of its proper divisors (15926682988).

21234163532 is a wasteful number, since it uses less digits than its factorization.

21234163532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151480 (or 151478 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The spelling of 21234163532 in words is "twenty-one billion, two hundred thirty-four million, one hundred sixty-three thousand, five hundred thirty-two".