87320863362878 has 4 divisors (see below), whose sum is σ = 130981295044320. Its totient is φ = 43660431681438.

The previous prime is 87320863362857. The next prime is 87320863362883. The reversal of 87320863362878 is 87826336802378.

87320863362878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21830215840718 + ... + 21830215840721.

It is an arithmetic number, because the mean of its divisors is an integer number (32745323761080).

Almost surely, 2^{87320863362878} is an apocalyptic number.

87320863362878 is a deficient number, since it is larger than the sum of its proper divisors (43660431681442).

87320863362878 is a wasteful number, since it uses less digits than its factorization.

87320863362878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43660431681441.

The product of its (nonzero) digits is 780337152, while the sum is 71.

The spelling of 87320863362878 in words is "eighty-seven trillion, three hundred twenty billion, eight hundred sixty-three million, three hundred sixty-two thousand, eight hundred seventy-eight".