87665500959 has 16 divisors (see below), whose sum is σ = 118711100640. Its totient is φ = 57538615680.

The previous prime is 87665500943. The next prime is 87665500987. The reversal of 87665500959 is 95900556678.

It is not a de Polignac number, because 87665500959 - 2⁴ = 87665500943 is a prime.

It is a super-4 number, since 4×87665500959⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87665500759) 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, 802452 + ... + 905129.

It is an arithmetic number, because the mean of its divisors is an integer number (7419443790).

Almost surely, 2^87665500959 is an apocalyptic number.

87665500959 is a deficient number, since it is larger than the sum of its proper divisors (31045599681).

87665500959 is a wasteful number, since it uses less digits than its factorization.

87665500959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707850.

The product of its (nonzero) digits is 20412000, while the sum is 60.

The spelling of 87665500959 in words is "eighty-seven billion, six hundred sixty-five million, five hundred thousand, nine hundred fifty-nine".