21500163603032 has 16 divisors (see below), whose sum is σ = 40314128554800. Its totient is φ = 10749729321760.

The previous prime is 21500163603029. The next prime is 21500163603047. The reversal of 21500163603032 is 23030636100512.

It is a self number, because there is not a number n which added to its sum of digits gives 21500163603032.

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, 43800644 + ... + 44288787.

It is an arithmetic number, because the mean of its divisors is an integer number (2519633034675).

Almost surely, 2^{21500163603032} is an apocalyptic number.

It is an amenable number.

21500163603032 is a deficient number, since it is larger than the sum of its proper divisors (18813964951768).

21500163603032 is a wasteful number, since it uses less digits than its factorization.

21500163603032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88119946 (or 88119942 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 21500163603032 its reverse (23030636100512), we get a palindrome (44530799703544).

The spelling of 21500163603032 in words is "twenty-one trillion, five hundred billion, one hundred sixty-three million, six hundred three thousand, thirty-two".