87869608744 has 8 divisors (see below), whose sum is σ = 164755516410. Its totient is φ = 43934804368.

The previous prime is 87869608727. The next prime is 87869608747. The reversal of 87869608744 is 44780696878.

It can be written as a sum of positive squares in only one way, i.e., 71055299844 + 16814308900 = 266562^2 + 129670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 87869608744.

It is not an unprimeable number, because it can be changed into a prime (87869608747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5491850539 + ... + 5491850554.

Almost surely, 2^87869608744 is an apocalyptic number.

It is an amenable number.

87869608744 is a deficient number, since it is larger than the sum of its proper divisors (76885907666).

87869608744 is a wasteful number, since it uses less digits than its factorization.

87869608744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10983701099 (or 10983701095 counting only the distinct ones).

The product of its (nonzero) digits is 130056192, while the sum is 67.

The spelling of 87869608744 in words is "eighty-seven billion, eight hundred sixty-nine million, six hundred eight thousand, seven hundred forty-four".