21250641460236 has 12 divisors (see below), whose sum is σ = 49584830073912. Its totient is φ = 7083547153408.

The previous prime is 21250641460193. The next prime is 21250641460267. The reversal of 21250641460236 is 63206414605212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 885443394165 + ... + 885443394188.

It is an arithmetic number, because the mean of its divisors is an integer number (4132069172826).

Almost surely, 2^{21250641460236} is an apocalyptic number.

It is an amenable number.

21250641460236 is an abundant number, since it is smaller than the sum of its proper divisors (28334188613676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21250641460236 is a wasteful number, since it uses less digits than its factorization.

21250641460236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770886788360 (or 1770886788358 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 21250641460236 in words is "twenty-one trillion, two hundred fifty billion, six hundred forty-one million, four hundred sixty thousand, two hundred thirty-six".