21472133376 has 144 divisors (see below), whose sum is σ = 59218931520. Its totient is φ = 6902538240.

The previous prime is 21472133363. The next prime is 21472133387. The reversal of 21472133376 is 67333127412.

It is a super-2 number, since 2×21472133376² (a number of 21 digits) contains 22 as substring.

Its product of digits (127008) is a multiple of the sum of its prime factors (9072).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2397066 + ... + 2406006.

It is an arithmetic number, because the mean of its divisors is an integer number (411242580).

Almost surely, 2^21472133376 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 21472133376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29609465760).

21472133376 is an abundant number, since it is smaller than the sum of its proper divisors (37746798144).

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

21472133376 is an equidigital number, since it uses as much as digits as its factorization.

21472133376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072 (or 9058 counting only the distinct ones).

The product of its digits is 127008, while the sum is 39.

The spelling of 21472133376 in words is "twenty-one billion, four hundred seventy-two million, one hundred thirty-three thousand, three hundred seventy-six".