87989690050 has 24 divisors (see below), whose sum is σ = 165281237172. Its totient is φ = 34847400000.

The previous prime is 87989690027. The next prime is 87989690071. The reversal of 87989690050 is 5009698978.

It can be written as a sum of positive squares in 6 ways, for example, as 63815348689 + 24174341361 = 252617^2 + 155481^2 .

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 11 ways as a sum of consecutive naturals, for example, 8706801 + ... + 8716900.

Almost surely, 2^87989690050 is an apocalyptic number.

87989690050 is a deficient number, since it is larger than the sum of its proper divisors (77291547122).

87989690050 is a wasteful number, since it uses less digits than its factorization.

87989690050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17423814 (or 17423809 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 61.

The spelling of 87989690050 in words is "eighty-seven billion, nine hundred eighty-nine million, six hundred ninety thousand, fifty".