21507532275063 has 8 divisors (see below), whose sum is σ = 28676807381376. Its totient is φ = 14338306009400.

The previous prime is 21507532275059. The next prime is 21507532275079. The reversal of 21507532275063 is 36057223570512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21507532275063 - 2² = 21507532275059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21507532225063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11169993 + ... + 12953138.

It is an arithmetic number, because the mean of its divisors is an integer number (3584600922672).

Almost surely, 2^{21507532275063} is an apocalyptic number.

21507532275063 is a deficient number, since it is larger than the sum of its proper divisors (7169275106313).

21507532275063 is a wasteful number, since it uses less digits than its factorization.

21507532275063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24420325.

The product of its (nonzero) digits is 2646000, while the sum is 48.

The spelling of 21507532275063 in words is "twenty-one trillion, five hundred seven billion, five hundred thirty-two million, two hundred seventy-five thousand, sixty-three".