21160471533 has 8 divisors (see below), whose sum is σ = 28216135200. Its totient is φ = 14105894448.

The previous prime is 21160471531. The next prime is 21160471537. The reversal of 21160471533 is 33517406112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21160471533 - 2¹ = 21160471531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21160471494 and 21160471503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21160471531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225063 + ... + 304916.

It is an arithmetic number, because the mean of its divisors is an integer number (3527016900).

Almost surely, 2^21160471533 is an apocalyptic number.

It is an amenable number.

21160471533 is a deficient number, since it is larger than the sum of its proper divisors (7055663667).

21160471533 is a wasteful number, since it uses less digits than its factorization.

21160471533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543291.

The product of its (nonzero) digits is 15120, while the sum is 33.

Adding to 21160471533 its reverse (33517406112), we get a palindrome (54677877645).

The spelling of 21160471533 in words is "twenty-one billion, one hundred sixty million, four hundred seventy-one thousand, five hundred thirty-three".