87943022865 has 16 divisors (see below), whose sum is σ = 156343152000. Its totient is φ = 46902945456.

The previous prime is 87943022863. The next prime is 87943022879. The reversal of 87943022865 is 56822034978.

It is not a de Polignac number, because 87943022865 - 2¹ = 87943022863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87943022863) 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, 325714765 + ... + 325715034.

It is an arithmetic number, because the mean of its divisors is an integer number (9771447000).

Almost surely, 2^87943022865 is an apocalyptic number.

It is an amenable number.

87943022865 is a deficient number, since it is larger than the sum of its proper divisors (68400129135).

87943022865 is a wasteful number, since it uses less digits than its factorization.

87943022865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651429813 (or 651429807 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 87943022865 in words is "eighty-seven billion, nine hundred forty-three million, twenty-two thousand, eight hundred sixty-five".