21532400044104 has 16 divisors (see below), whose sum is σ = 53831000110320. Its totient is φ = 7177466681360.

The previous prime is 21532400044091. The next prime is 21532400044123. The reversal of 21532400044104 is 40144000423512.

It is a super-2 number, since 2×21532400044104² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448591667562 + ... + 448591667609.

It is an arithmetic number, because the mean of its divisors is an integer number (3364437506895).

Almost surely, 2^{21532400044104} is an apocalyptic number.

21532400044104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21532400044104 is an abundant number, since it is smaller than the sum of its proper divisors (32298600066216).

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

21532400044104 is a wasteful number, since it uses less digits than its factorization.

21532400044104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897183335180 (or 897183335176 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 21532400044104 its reverse (40144000423512), we get a palindrome (61676400467616).

The spelling of 21532400044104 in words is "twenty-one trillion, five hundred thirty-two billion, four hundred million, forty-four thousand, one hundred four".