21352941576 has 128 divisors (see below), whose sum is σ = 61171200000. Its totient is φ = 6898167360.

The previous prime is 21352941569. The next prime is 21352941601. The reversal of 21352941576 is 67514925312.

21352941576 is a `hidden beast` number, since 2 + 1 + 35 + 2 + 9 + 41 + 576 = 666.

It is a super-2 number, since 2×21352941576² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 893025 + ... + 916623.

It is an arithmetic number, because the mean of its divisors is an integer number (477900000).

Almost surely, 2^21352941576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21352941576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30585600000).

21352941576 is an abundant number, since it is smaller than the sum of its proper divisors (39818258424).

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

21352941576 is a wasteful number, since it uses less digits than its factorization.

21352941576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23744 (or 23734 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 21352941576 in words is "twenty-one billion, three hundred fifty-two million, nine hundred forty-one thousand, five hundred seventy-six".