16434272461 has 2 divisors, whose sum is σ = 16434272462. Its totient is φ = 16434272460.

The previous prime is 16434272411. The next prime is 16434272539. The reversal of 16434272461 is 16427243461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12192355561 + 4241916900 = 110419^2 + 65130^2 .

It is a cyclic number.

It is not a de Polignac number, because 16434272461 - 2²³ = 16425883853 is a prime.

It is a super-2 number, since 2×16434272461² (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 (16434272411) 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, 8217136230 + 8217136231.

It is an arithmetic number, because the mean of its divisors is an integer number (8217136231).

Almost surely, 2^16434272461 is an apocalyptic number.

It is an amenable number.

16434272461 is a deficient number, since it is larger than the sum of its proper divisors (1).

16434272461 is an equidigital number, since it uses as much as digits as its factorization.

16434272461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 40.

The spelling of 16434272461 in words is "sixteen billion, four hundred thirty-four million, two hundred seventy-two thousand, four hundred sixty-one".