16541015987 has 2 divisors, whose sum is σ = 16541015988. Its totient is φ = 16541015986.

The previous prime is 16541015983. The next prime is 16541015993. The reversal of 16541015987 is 78951014561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16541015987 - 2² = 16541015983 is a prime.

It is a super-3 number, since 3×16541015987³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (16541015983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8270507993 + 8270507994.

It is an arithmetic number, because the mean of its divisors is an integer number (8270507994).

Almost surely, 2^16541015987 is an apocalyptic number.

16541015987 is a deficient number, since it is larger than the sum of its proper divisors (1).

16541015987 is an equidigital number, since it uses as much as digits as its factorization.

16541015987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 47.

The spelling of 16541015987 in words is "sixteen billion, five hundred forty-one million, fifteen thousand, nine hundred eighty-seven".