21160471532 has 24 divisors (see below), whose sum is σ = 40033329840. Its totient is φ = 9752477760.

The previous prime is 21160471531. The next prime is 21160471537. The reversal of 21160471532 is 23517406112.

It is not an unprimeable number, because it can be changed into a prime (21160471531) 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, 3759719 + ... + 3765342.

It is an arithmetic number, because the mean of its divisors is an integer number (1668055410).

Almost surely, 2^21160471532 is an apocalyptic number.

It is an amenable number.

21160471532 is a deficient number, since it is larger than the sum of its proper divisors (18872858308).

21160471532 is a wasteful number, since it uses less digits than its factorization.

21160471532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7525121 (or 7525119 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 21160471532 its reverse (23517406112), we get a palindrome (44677877644).

The spelling of 21160471532 in words is "twenty-one billion, one hundred sixty million, four hundred seventy-one thousand, five hundred thirty-two".