21486365429952 has 28 divisors (see below), whose sum is σ = 56849341867256. Its totient is φ = 7162121809920.

The previous prime is 21486365429951. The next prime is 21486365429959. The reversal of 21486365429952 is 25992456368412.

It is not an unprimeable number, because it can be changed into a prime (21486365429951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55954076449 + ... + 55954076832.

Almost surely, 2^{21486365429952} is an apocalyptic number.

It is an amenable number.

21486365429952 is an abundant number, since it is smaller than the sum of its proper divisors (35362976437304).

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

21486365429952 is a wasteful number, since it uses less digits than its factorization.

21486365429952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111908153296 (or 111908153286 counting only the distinct ones).

The product of its digits is 223948800, while the sum is 66.

The spelling of 21486365429952 in words is "twenty-one trillion, four hundred eighty-six billion, three hundred sixty-five million, four hundred twenty-nine thousand, nine hundred fifty-two".