87778576338 has 16 divisors (see below), whose sum is σ = 176735390400. Its totient is φ = 29063152496.

The previous prime is 87778576313. The next prime is 87778576357. The reversal of 87778576338 is 83367587778.

It is a Curzon 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, 49092270 + ... + 49094057.

It is an arithmetic number, because the mean of its divisors is an integer number (11045961900).

Almost surely, 2^87778576338 is an apocalyptic number.

87778576338 is an abundant number, since it is smaller than the sum of its proper divisors (88956814062).

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

87778576338 is a wasteful number, since it uses less digits than its factorization.

87778576338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98186481.

The product of its digits is 331914240, while the sum is 69.

The spelling of 87778576338 in words is "eighty-seven billion, seven hundred seventy-eight million, five hundred seventy-six thousand, three hundred thirty-eight".