87478091888 has 40 divisors (see below), whose sum is σ = 185028626160. Its totient is φ = 39734435840.

The previous prime is 87478091879. The next prime is 87478091917. The reversal of 87478091888 is 88819087478.

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, 71606 + ... + 424362.

It is an arithmetic number, because the mean of its divisors is an integer number (4625715654).

Almost surely, 2^87478091888 is an apocalyptic number.

87478091888 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

87478091888 is an abundant number, since it is smaller than the sum of its proper divisors (97550534272).

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

87478091888 is a wasteful number, since it uses less digits than its factorization.

87478091888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354185 (or 354179 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 68.

The spelling of 87478091888 in words is "eighty-seven billion, four hundred seventy-eight million, ninety-one thousand, eight hundred eighty-eight".