21298548352 has 32 divisors (see below), whose sum is σ = 42454954080. Its totient is φ = 10643187456.

The previous prime is 21298548331. The next prime is 21298548371. The reversal of 21298548352 is 25384589212.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 21298548296 and 21298548305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181563 + ... + 274885.

It is an arithmetic number, because the mean of its divisors is an integer number (1326717315).

Almost surely, 2^21298548352 is an apocalyptic number.

It is an amenable number.

21298548352 is a deficient number, since it is larger than the sum of its proper divisors (21156405728).

21298548352 is an equidigital number, since it uses as much as digits as its factorization.

21298548352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95120 (or 95108 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 49.

The spelling of 21298548352 in words is "twenty-one billion, two hundred ninety-eight million, five hundred forty-eight thousand, three hundred fifty-two".