21452656122063 has 12 divisors (see below), whose sum is σ = 31001009719680. Its totient is φ = 14295383163936.

The previous prime is 21452656122059. The next prime is 21452656122097. The reversal of 21452656122063 is 36022165625412.

21452656122063 is a `hidden beast` number, since 2 + 1 + 4 + 5 + 2 + 6 + 5 + 612 + 20 + 6 + 3 = 666.

It is not a de Polignac number, because 21452656122063 - 2² = 21452656122059 is a prime.

It is a super-2 number, since 2×21452656122063² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21452656122013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532277406 + ... + 532317707.

It is an arithmetic number, because the mean of its divisors is an integer number (2583417476640).

Almost surely, 2^{21452656122063} is an apocalyptic number.

21452656122063 is a deficient number, since it is larger than the sum of its proper divisors (9548353597617).

21452656122063 is a wasteful number, since it uses less digits than its factorization.

21452656122063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064597358 (or 1064597355 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 21452656122063 in words is "twenty-one trillion, four hundred fifty-two billion, six hundred fifty-six million, one hundred twenty-two thousand, sixty-three".