21462732317250 has 192 divisors, whose sum is σ = 69241403612160. Its totient is φ = 4905767311200.

The previous prime is 21462732317209. The next prime is 21462732317261. The reversal of 21462732317250 is 5271323726412.

21462732317250 is a `hidden beast` number, since 2 + 1 + 4 + 62 + 7 + 323 + 17 + 250 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 21462732317196 and 21462732317205.

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 95 ways as a sum of consecutive naturals, for example, 32114802 + ... + 32776301.

It is an arithmetic number, because the mean of its divisors is an integer number (360632310480).

Almost surely, 2^{21462732317250} is an apocalyptic number.

21462732317250 is an abundant number, since it is smaller than the sum of its proper divisors (47778671294910).

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

21462732317250 is a wasteful number, since it uses less digits than its factorization.

21462732317250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64891143 (or 64891120 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 21462732317250 in words is "twenty-one trillion, four hundred sixty-two billion, seven hundred thirty-two million, three hundred seventeen thousand, two hundred fifty".