84987617156 has 24 divisors (see below), whose sum is σ = 161754812184. Its totient is φ = 38836684800.

The previous prime is 84987617119. The next prime is 84987617167. The reversal of 84987617156 is 65171678948.

It can be written as a sum of positive squares in 4 ways, for example, as 29299168900 + 55688448256 = 171170^2 + 235984^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8085725 + ... + 8096228.

It is an arithmetic number, because the mean of its divisors is an integer number (6739783841).

Almost surely, 2^84987617156 is an apocalyptic number.

It is an amenable number.

84987617156 is a deficient number, since it is larger than the sum of its proper divisors (76767195028).

84987617156 is a wasteful number, since it uses less digits than its factorization.

84987617156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16182071 (or 16182069 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 62.

The spelling of 84987617156 in words is "eighty-four billion, nine hundred eighty-seven million, six hundred seventeen thousand, one hundred fifty-six".