20541695453 has 2 divisors, whose sum is σ = 20541695454. Its totient is φ = 20541695452.

The previous prime is 20541695443. The next prime is 20541695479. The reversal of 20541695453 is 35459614502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11772684004 + 8769011449 = 108502^2 + 93643^2 .

It is a cyclic number.

It is not a de Polignac number, because 20541695453 - 2¹⁶ = 20541629917 is a prime.

It is a super-2 number, since 2×20541695453² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20541695443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270847726 + 10270847727.

It is an arithmetic number, because the mean of its divisors is an integer number (10270847727).

Almost surely, 2^20541695453 is an apocalyptic number.

It is an amenable number.

20541695453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541695453 is an equidigital number, since it uses as much as digits as its factorization.

20541695453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 20541695453 in words is "twenty billion, five hundred forty-one million, six hundred ninety-five thousand, four hundred fifty-three".