21250641460156 has 24 divisors (see below), whose sum is σ = 37209989497856. Its totient is φ = 10619216339760.

The previous prime is 21250641460109. The next prime is 21250641460171. The reversal of 21250641460156 is 65106414605212.

It is a super-2 number, since 2×21250641460156² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302650405 + ... + 302720611.

Almost surely, 2^{21250641460156} is an apocalyptic number.

It is an amenable number.

21250641460156 is a deficient number, since it is larger than the sum of its proper divisors (15959348037700).

21250641460156 is a wasteful number, since it uses less digits than its factorization.

21250641460156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112609 (or 112607 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 21250641460156 in words is "twenty-one trillion, two hundred fifty billion, six hundred forty-one million, four hundred sixty thousand, one hundred fifty-six".