987071717579 has 4 divisors (see below), whose sum is σ = 996127421520. Its totient is φ = 978016013640.

The previous prime is 987071717573. The next prime is 987071717609. The reversal of 987071717579 is 975717170789.

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 987071717579 - 2¹⁶ = 987071652043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987071717573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4527851807 + ... + 4527852024.

It is an arithmetic number, because the mean of its divisors is an integer number (249031855380).

Almost surely, 2^987071717579 is an apocalyptic number.

987071717579 is a deficient number, since it is larger than the sum of its proper divisors (9055703941).

987071717579 is a wasteful number, since it uses less digits than its factorization.

987071717579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9055703940.

The product of its (nonzero) digits is 54454680, while the sum is 68.

The spelling of 987071717579 in words is "nine hundred eighty-seven billion, seventy-one million, seven hundred seventeen thousand, five hundred seventy-nine".