21323525602 has 16 divisors (see below), whose sum is σ = 32295195072. Its totient is φ = 10558528560.

The previous prime is 21323525591. The next prime is 21323525603. The reversal of 21323525602 is 20652532312.

It is not an unprimeable number, because it can be changed into a prime (21323525603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680827 + ... + 711457.

It is an arithmetic number, because the mean of its divisors is an integer number (2018449692).

Almost surely, 2^21323525602 is an apocalyptic number.

21323525602 is a deficient number, since it is larger than the sum of its proper divisors (10971669470).

21323525602 is a wasteful number, since it uses less digits than its factorization.

21323525602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33993.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 21323525602 in words is "twenty-one billion, three hundred twenty-three million, five hundred twenty-five thousand, six hundred two".