16411521461 has 2 divisors, whose sum is σ = 16411521462. Its totient is φ = 16411521460.

The previous prime is 16411521449. The next prime is 16411521463. The reversal of 16411521461 is 16412511461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16410891025 + 630436 = 128105^2 + 794^2 .

It is an emirp because it is prime and its reverse (16412511461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16411521461 - 2¹⁸ = 16411259317 is a prime.

Together with 16411521463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16411521463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8205760730 + 8205760731.

It is an arithmetic number, because the mean of its divisors is an integer number (8205760731).

Almost surely, 2^16411521461 is an apocalyptic number.

It is an amenable number.

16411521461 is a deficient number, since it is larger than the sum of its proper divisors (1).

16411521461 is an equidigital number, since it uses as much as digits as its factorization.

16411521461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The spelling of 16411521461 in words is "sixteen billion, four hundred eleven million, five hundred twenty-one thousand, four hundred sixty-one".