21375567350 has 48 divisors (see below), whose sum is σ = 40060293120. Its totient is φ = 8485495200.

The previous prime is 21375567349. The next prime is 21375567377. The reversal of 21375567350 is 5376557312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7423211 + ... + 7426089.

It is an arithmetic number, because the mean of its divisors is an integer number (834589440).

Almost surely, 2^21375567350 is an apocalyptic number.

21375567350 is a deficient number, since it is larger than the sum of its proper divisors (18684725770).

21375567350 is a wasteful number, since it uses less digits than its factorization.

21375567350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965 (or 3960 counting only the distinct ones).

The product of its (nonzero) digits is 661500, while the sum is 44.

The spelling of 21375567350 in words is "twenty-one billion, three hundred seventy-five million, five hundred sixty-seven thousand, three hundred fifty".