21160325064523 has 2 divisors, whose sum is σ = 21160325064524. Its totient is φ = 21160325064522.

The previous prime is 21160325064509. The next prime is 21160325064563. The reversal of 21160325064523 is 32546052306112.

It is an a-pointer prime, because the next prime (21160325064563) can be obtained adding 21160325064523 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21160325064523 is a prime.

It is a super-2 number, since 2×21160325064523² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21160325064563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10580162532261 + 10580162532262.

It is an arithmetic number, because the mean of its divisors is an integer number (10580162532262).

Almost surely, 2^{21160325064523} is an apocalyptic number.

21160325064523 is a deficient number, since it is larger than the sum of its proper divisors (1).

21160325064523 is an equidigital number, since it uses as much as digits as its factorization.

21160325064523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 21160325064523 in words is "twenty-one trillion, one hundred sixty billion, three hundred twenty-five million, sixty-four thousand, five hundred twenty-three".