21323525426 has 32 divisors (see below), whose sum is σ = 38458288512. Its totient is φ = 8674784640.

The previous prime is 21323525417. The next prime is 21323525477. The reversal of 21323525426 is 62452532312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480776 + ... + 523251.

It is an arithmetic number, because the mean of its divisors is an integer number (1201821516).

Almost surely, 2^21323525426 is an apocalyptic number.

21323525426 is a deficient number, since it is larger than the sum of its proper divisors (17134763086).

21323525426 is a wasteful number, since it uses less digits than its factorization.

21323525426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004114.

The product of its digits is 86400, while the sum is 35.

The spelling of 21323525426 in words is "twenty-one billion, three hundred twenty-three million, five hundred twenty-five thousand, four hundred twenty-six".