16581054527 has 2 divisors, whose sum is σ = 16581054528. Its totient is φ = 16581054526.

The previous prime is 16581054473. The next prime is 16581054559. The reversal of 16581054527 is 72545018561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16581054527 - 2¹⁸ = 16580792383 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16581059527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8290527263 + 8290527264.

It is an arithmetic number, because the mean of its divisors is an integer number (8290527264).

Almost surely, 2^16581054527 is an apocalyptic number.

16581054527 is a deficient number, since it is larger than the sum of its proper divisors (1).

16581054527 is an equidigital number, since it uses as much as digits as its factorization.

16581054527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336000, while the sum is 44.

The spelling of 16581054527 in words is "sixteen billion, five hundred eighty-one million, fifty-four thousand, five hundred twenty-seven".