21341628752 has 20 divisors (see below), whose sum is σ = 41352987540. Its totient is φ = 10669890048.

The previous prime is 21341628743. The next prime is 21341628797. The reversal of 21341628752 is 25782614312.

It can be written as a sum of positive squares in 2 ways, for example, as 5971580176 + 15370048576 = 77276^2 + 123976^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156878 + ... + 259410.

It is an arithmetic number, because the mean of its divisors is an integer number (2067649377).

Almost surely, 2^21341628752 is an apocalyptic number.

It is an amenable number.

21341628752 is a deficient number, since it is larger than the sum of its proper divisors (20011358788).

21341628752 is a wasteful number, since it uses less digits than its factorization.

21341628752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115550 (or 115544 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The spelling of 21341628752 in words is "twenty-one billion, three hundred forty-one million, six hundred twenty-eight thousand, seven hundred fifty-two".