21575343162 has 16 divisors (see below), whose sum is σ = 44203142592. Its totient is φ = 7016371680.

The previous prime is 21575343157. The next prime is 21575343169. The reversal of 21575343162 is 26134357512.

It is a self number, because there is not a number n which added to its sum of digits gives 21575343162.

It is not an unprimeable number, because it can be changed into a prime (21575343169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43852078 + ... + 43852569.

It is an arithmetic number, because the mean of its divisors is an integer number (2762696412).

Almost surely, 2^21575343162 is an apocalyptic number.

21575343162 is an abundant number, since it is smaller than the sum of its proper divisors (22627799430).

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

21575343162 is a wasteful number, since it uses less digits than its factorization.

21575343162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87704693.

The product of its digits is 151200, while the sum is 39.

The spelling of 21575343162 in words is "twenty-one billion, five hundred seventy-five million, three hundred forty-three thousand, one hundred sixty-two".