21488705295072 has 96 divisors (see below), whose sum is σ = 56564180094240. Its totient is φ = 7143057899520.

The previous prime is 21488705295061. The next prime is 21488705295089. The reversal of 21488705295072 is 27059250788412.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 21488705294997 and 21488705295015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195366172 + ... + 195476132.

It is an arithmetic number, because the mean of its divisors is an integer number (589210209315).

Almost surely, 2^{21488705295072} is an apocalyptic number.

It is an amenable number.

21488705295072 is an abundant number, since it is smaller than the sum of its proper divisors (35075474799168).

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

21488705295072 is a wasteful number, since it uses less digits than its factorization.

21488705295072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115596 (or 115588 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 60.

The spelling of 21488705295072 in words is "twenty-one trillion, four hundred eighty-eight billion, seven hundred five million, two hundred ninety-five thousand, seventy-two".