20466187471 has 2 divisors, whose sum is σ = 20466187472. Its totient is φ = 20466187470.

The previous prime is 20466187457. The next prime is 20466187481. The reversal of 20466187471 is 17478166402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20466187471 - 2¹¹ = 20466185423 is a prime.

It is a super-3 number, since 3×20466187471³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20466187411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233093735 + 10233093736.

It is an arithmetic number, because the mean of its divisors is an integer number (10233093736).

Almost surely, 2^20466187471 is an apocalyptic number.

20466187471 is a deficient number, since it is larger than the sum of its proper divisors (1).

20466187471 is an equidigital number, since it uses as much as digits as its factorization.

20466187471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 20466187471 in words is "twenty billion, four hundred sixty-six million, one hundred eighty-seven thousand, four hundred seventy-one".