21325374404 has 6 divisors (see below), whose sum is σ = 37319405214. Its totient is φ = 10662687200.

The previous prime is 21325374397. The next prime is 21325374493. The reversal of 21325374404 is 40447352312.

It can be written as a sum of positive squares in only one way, i.e., 17381785600 + 3943588804 = 131840^2 + 62798^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2665671797 + ... + 2665671804.

It is an arithmetic number, because the mean of its divisors is an integer number (6219900869).

Almost surely, 2^21325374404 is an apocalyptic number.

It is an amenable number.

21325374404 is a deficient number, since it is larger than the sum of its proper divisors (15994030810).

21325374404 is a wasteful number, since it uses less digits than its factorization.

21325374404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5331343605 (or 5331343603 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 21325374404 in words is "twenty-one billion, three hundred twenty-five million, three hundred seventy-four thousand, four hundred four".