21370885069272 has 128 divisors (see below), whose sum is σ = 54746610428160. Its totient is φ = 6949903196160.

The previous prime is 21370885069231. The next prime is 21370885069297. The reversal of 21370885069272 is 27296058807312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328129303 + ... + 328194425.

It is an arithmetic number, because the mean of its divisors is an integer number (427707893970).

Almost surely, 2^{21370885069272} is an apocalyptic number.

It is an amenable number.

21370885069272 is an abundant number, since it is smaller than the sum of its proper divisors (33375725358888).

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

21370885069272 is a wasteful number, since it uses less digits than its factorization.

21370885069272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67233 (or 67229 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 21370885069272 in words is "twenty-one trillion, three hundred seventy billion, eight hundred eighty-five million, sixty-nine thousand, two hundred seventy-two".