21474004545488 has 160 divisors (see below), whose sum is σ = 49325242982400. Its totient is φ = 8947620979200.

The previous prime is 21474004545467. The next prime is 21474004545503. The reversal of 21474004545488 is 88454540047412.

It is a super-3 number, since 3×21474004545488³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1256295470 + ... + 1256312562.

It is an arithmetic number, because the mean of its divisors is an integer number (308282768640).

Almost surely, 2^{21474004545488} 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 21474004545488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24662621491200).

21474004545488 is an abundant number, since it is smaller than the sum of its proper divisors (27851238436912).

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

21474004545488 is a wasteful number, since it uses less digits than its factorization.

21474004545488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29281 (or 29275 counting only the distinct ones).

The product of its (nonzero) digits is 22937600, while the sum is 56.

The spelling of 21474004545488 in words is "twenty-one trillion, four hundred seventy-four billion, four million, five hundred forty-five thousand, four hundred eighty-eight".