21490713195732 has 144 divisors (see below), whose sum is σ = 60217590888000. Its totient is φ = 6408173998080.

The previous prime is 21490713195697. The next prime is 21490713195751. The reversal of 21490713195732 is 23759131709412.

21490713195732 is a `hidden beast` number, since 2 + 1 + 49 + 0 + 7 + 13 + 19 + 573 + 2 = 666.

It is a super-2 number, since 2×21490713195732² (a number of 27 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 4611444 + ... + 8015412.

It is an arithmetic number, because the mean of its divisors is an integer number (418177714500).

Almost surely, 2^{21490713195732} is an apocalyptic number.

21490713195732 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21490713195732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30108795444000).

21490713195732 is an abundant number, since it is smaller than the sum of its proper divisors (38726877692268).

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

21490713195732 is a wasteful number, since it uses less digits than its factorization.

21490713195732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404246 (or 3404241 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 21490713195732 in words is "twenty-one trillion, four hundred ninety billion, seven hundred thirteen million, one hundred ninety-five thousand, seven hundred thirty-two".