87428068666956 has 36 divisors (see below), whose sum is σ = 224297217631032. Its totient is φ = 28707724039104.

The previous prime is 87428068666903. The next prime is 87428068666963. The reversal of 87428068666956 is 65966686082478.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18123560745 + ... + 18123565568.

Almost surely, 2^{87428068666956} is an apocalyptic number.

It is an amenable number.

87428068666956 is an abundant number, since it is smaller than the sum of its proper divisors (136869148964076).

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

87428068666956 is a wasteful number, since it uses less digits than its factorization.

87428068666956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36247126390 (or 36247126385 counting only the distinct ones).

The product of its (nonzero) digits is 10032906240, while the sum is 81.

The spelling of 87428068666956 in words is "eighty-seven trillion, four hundred twenty-eight billion, sixty-eight million, six hundred sixty-six thousand, nine hundred fifty-six".