161715548487 has 8 divisors (see below), whose sum is σ = 220635167104. Its totient is φ = 105303147768.

The previous prime is 161715548417. The next prime is 161715548509. The reversal of 161715548487 is 784845517161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161715548487 - 2¹⁵ = 161715515719 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 (161715548417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626804323 + ... + 626804580.

It is an arithmetic number, because the mean of its divisors is an integer number (27579395888).

Almost surely, 2^161715548487 is an apocalyptic number.

161715548487 is a deficient number, since it is larger than the sum of its proper divisors (58919618617).

161715548487 is a wasteful number, since it uses less digits than its factorization.

161715548487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253608949.

The product of its digits is 7526400, while the sum is 57.

The spelling of 161715548487 in words is "one hundred sixty-one billion, seven hundred fifteen million, five hundred forty-eight thousand, four hundred eighty-seven".