21024454152312 has 96 divisors (see below), whose sum is σ = 61322164503600. Its totient is φ = 6468974212608.

The previous prime is 21024454152263. The next prime is 21024454152341. The reversal of 21024454152312 is 21325145442012.

21024454152312 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 4 + 4 + 5 + 415 + 231 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111457308 + ... + 111645780.

Almost surely, 2^{21024454152312} is an apocalyptic number.

It is an amenable number.

21024454152312 is an abundant number, since it is smaller than the sum of its proper divisors (40297710351288).

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

21024454152312 is a wasteful number, since it uses less digits than its factorization.

21024454152312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307677 (or 307670 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 21024454152312 its reverse (21325145442012), we get a palindrome (42349599594324).

The spelling of 21024454152312 in words is "twenty-one trillion, twenty-four billion, four hundred fifty-four million, one hundred fifty-two thousand, three hundred twelve".