21652614506293 has 2 divisors, whose sum is σ = 21652614506294. Its totient is φ = 21652614506292.

The previous prime is 21652614506119. The next prime is 21652614506309. The reversal of 21652614506293 is 39260541625612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21513808336804 + 138806169489 = 4638298^2 + 372567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21652614506293 is a prime.

It is a super-2 number, since 2×21652614506293² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21652614506293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21652614506093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10826307253146 + 10826307253147.

It is an arithmetic number, because the mean of its divisors is an integer number (10826307253147).

Almost surely, 2^{21652614506293} is an apocalyptic number.

It is an amenable number.

21652614506293 is a deficient number, since it is larger than the sum of its proper divisors (1).

21652614506293 is an equidigital number, since it uses as much as digits as its factorization.

21652614506293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 21652614506293 in words is "twenty-one trillion, six hundred fifty-two billion, six hundred fourteen million, five hundred six thousand, two hundred ninety-three".