16908145487 has 4 divisors (see below), whose sum is σ = 16908417000. Its totient is φ = 16907873976.

The previous prime is 16908145477. The next prime is 16908145511. The reversal of 16908145487 is 78454180961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16908145487 - 2²⁰ = 16907096911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16908145417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9368 + ... + 184130.

It is an arithmetic number, because the mean of its divisors is an integer number (4227104250).

Almost surely, 2^16908145487 is an apocalyptic number.

16908145487 is a deficient number, since it is larger than the sum of its proper divisors (271513).

16908145487 is an equidigital number, since it uses as much as digits as its factorization.

16908145487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271512.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 16908145487 in words is "sixteen billion, nine hundred eight million, one hundred forty-five thousand, four hundred eighty-seven".