87109982641 has 16 divisors (see below), whose sum is σ = 95557226688. Its totient is φ = 78751153600.

The previous prime is 87109982639. The next prime is 87109982647. The reversal of 87109982641 is 14628990178.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87109982641 - 2¹ = 87109982639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87109982647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5151186 + ... + 5168068.

It is an arithmetic number, because the mean of its divisors is an integer number (5972326668).

Almost surely, 2^87109982641 is an apocalyptic number.

It is an amenable number.

87109982641 is a deficient number, since it is larger than the sum of its proper divisors (8447244047).

87109982641 is a wasteful number, since it uses less digits than its factorization.

87109982641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19472.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 87109982641 in words is "eighty-seven billion, one hundred nine million, nine hundred eighty-two thousand, six hundred forty-one".