21527292320 has 48 divisors (see below), whose sum is σ = 50870164968. Its totient is φ = 8608896000.

The previous prime is 21527292317. The next prime is 21527292329. The reversal of 21527292320 is 2329272512.

It can be written as a sum of positive squares in 4 ways, for example, as 20365573264 + 1161719056 = 142708^2 + 34084^2 .

It is not an unprimeable number, because it can be changed into a prime (21527292329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799070 + ... + 825570.

Almost surely, 2^21527292320 is an apocalyptic number.

21527292320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21527292320 is an abundant number, since it is smaller than the sum of its proper divisors (29342872648).

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

21527292320 is a wasteful number, since it uses less digits than its factorization.

21527292320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31593 (or 31585 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 21527292320 in words is "twenty-one billion, five hundred twenty-seven million, two hundred ninety-two thousand, three hundred twenty".