87951079565 has 8 divisors (see below), whose sum is σ = 105544171800. Its totient is φ = 70358946112.

The previous prime is 87951079561. The next prime is 87951079577. The reversal of 87951079565 is 56597015978.

It can be written as a sum of positive squares in 4 ways, for example, as 932569444 + 87018510121 = 30538^2 + 294989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87951079565 - 2² = 87951079561 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87951079498 and 87951079507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87951079561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19490 + ... + 419859.

It is an arithmetic number, because the mean of its divisors is an integer number (13193021475).

Almost surely, 2^87951079565 is an apocalyptic number.

It is an amenable number.

87951079565 is a deficient number, since it is larger than the sum of its proper divisors (17593092235).

87951079565 is a wasteful number, since it uses less digits than its factorization.

87951079565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479391.

The product of its (nonzero) digits is 23814000, while the sum is 62.

The spelling of 87951079565 in words is "eighty-seven billion, nine hundred fifty-one million, seventy-nine thousand, five hundred sixty-five".