21453152152 has 32 divisors (see below), whose sum is σ = 41094446400. Its totient is φ = 10497037824.

The previous prime is 21453152129. The next prime is 21453152213. The reversal of 21453152152 is 25125135412.

It is a super-2 number, since 2×21453152152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78783 + ... + 221614.

It is an arithmetic number, because the mean of its divisors is an integer number (1284201450).

Almost surely, 2^21453152152 is an apocalyptic number.

It is an amenable number.

21453152152 is a deficient number, since it is larger than the sum of its proper divisors (19641294248).

21453152152 is a wasteful number, since it uses less digits than its factorization.

21453152152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300595 (or 300591 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

Adding to 21453152152 its reverse (25125135412), we get a palindrome (46578287564).

The spelling of 21453152152 in words is "twenty-one billion, four hundred fifty-three million, one hundred fifty-two thousand, one hundred fifty-two".