16616523527 has 2 divisors, whose sum is σ = 16616523528. Its totient is φ = 16616523526.

The previous prime is 16616523523. The next prime is 16616523593. The reversal of 16616523527 is 72532561661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16616523527 - 2² = 16616523523 is a prime.

It is a super-2 number, since 2×16616523527² (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 (16616523523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8308261763 + 8308261764.

It is an arithmetic number, because the mean of its divisors is an integer number (8308261764).

Almost surely, 2^16616523527 is an apocalyptic number.

16616523527 is a deficient number, since it is larger than the sum of its proper divisors (1).

16616523527 is an equidigital number, since it uses as much as digits as its factorization.

16616523527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The spelling of 16616523527 in words is "sixteen billion, six hundred sixteen million, five hundred twenty-three thousand, five hundred twenty-seven".