87278227516878 has 16 divisors (see below), whose sum is σ = 174802655966160. Its totient is φ = 29051709016896.

The previous prime is 87278227516819. The next prime is 87278227517003. The reversal of 87278227516878 is 87861572287278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10258367575 + ... + 10258376082.

It is an arithmetic number, because the mean of its divisors is an integer number (10925165997885).

Almost surely, 2^{87278227516878} is an apocalyptic number.

87278227516878 is an abundant number, since it is smaller than the sum of its proper divisors (87524428449282).

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

87278227516878 is a wasteful number, since it uses less digits than its factorization.

87278227516878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20516744371.

The product of its digits is 2360279040, while the sum is 78.

The spelling of 87278227516878 in words is "eighty-seven trillion, two hundred seventy-eight billion, two hundred twenty-seven million, five hundred sixteen thousand, eight hundred seventy-eight".