87812194136982 has 32 divisors (see below), whose sum is σ = 204984088445952. Its totient is φ = 24555385593984.

The previous prime is 87812194136941. The next prime is 87812194136983. The reversal of 87812194136982 is 28963149121878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87812194136983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22242195123 + ... + 22242199070.

It is an arithmetic number, because the mean of its divisors is an integer number (6405752763936).

Almost surely, 2^{87812194136982} is an apocalyptic number.

87812194136982 is an abundant number, since it is smaller than the sum of its proper divisors (117171894308970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87812194136982 is a wasteful number, since it uses less digits than its factorization.

87812194136982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44484394252.

The product of its digits is 83607552, while the sum is 69.

The spelling of 87812194136982 in words is "eighty-seven trillion, eight hundred twelve billion, one hundred ninety-four million, one hundred thirty-six thousand, nine hundred eighty-two".