987116531572771 has 8 divisors (see below), whose sum is σ = 997587576414000. Its totient is φ = 976659165434400.

The previous prime is 987116531572757. The next prime is 987116531572789. The reversal of 987116531572771 is 177275135611789.

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

It is a cyclic number.

It is not a de Polignac number, because 987116531572771 - 2⁵ = 987116531572739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 987116531572771.

It is not an unprimeable number, because it can be changed into a prime (987116531572571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3419530621 + ... + 3419819278.

It is an arithmetic number, because the mean of its divisors is an integer number (124698447051750).

Almost surely, 2^{987116531572771} is an apocalyptic number.

987116531572771 is a deficient number, since it is larger than the sum of its proper divisors (10471044841229).

987116531572771 is a wasteful number, since it uses less digits than its factorization.

987116531572771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6839351429.

The product of its digits is 155584800, while the sum is 70.

The spelling of 987116531572771 in words is "nine hundred eighty-seven trillion, one hundred sixteen billion, five hundred thirty-one million, five hundred seventy-two thousand, seven hundred seventy-one".