87782943844 has 24 divisors (see below), whose sum is σ = 154473183648. Its totient is φ = 43648296000.

The previous prime is 87782943821. The next prime is 87782943847. The reversal of 87782943844 is 44834928778.

It is not an unprimeable number, because it can be changed into a prime (87782943847) 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, 577584 + ... + 713560.

It is an arithmetic number, because the mean of its divisors is an integer number (6436382652).

Almost surely, 2^87782943844 is an apocalyptic number.

It is an amenable number.

87782943844 is a deficient number, since it is larger than the sum of its proper divisors (66690239804).

87782943844 is a wasteful number, since it uses less digits than its factorization.

87782943844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136875 (or 136873 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 64.

The spelling of 87782943844 in words is "eighty-seven billion, seven hundred eighty-two million, nine hundred forty-three thousand, eight hundred forty-four".