87878142912 has 168 divisors, whose sum is σ = 272040345936. Its totient is φ = 24962445312.

The previous prime is 87878142907. The next prime is 87878142931. The reversal of 87878142912 is 21924187878.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1600588 + ... + 1654580.

Almost surely, 2^87878142912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87878142912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136020172968).

87878142912 is an abundant number, since it is smaller than the sum of its proper divisors (184162203024).

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

87878142912 is a wasteful number, since it uses less digits than its factorization.

87878142912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54195 (or 54178 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 57.

The spelling of 87878142912 in words is "eighty-seven billion, eight hundred seventy-eight million, one hundred forty-two thousand, nine hundred twelve".