87665533111 has 4 divisors (see below), whose sum is σ = 94409035672. Its totient is φ = 80922030552.

The previous prime is 87665533103. The next prime is 87665533127. The reversal of 87665533111 is 11133556678.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87665533111 - 2³ = 87665533103 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87665536111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3371751261 + ... + 3371751286.

It is an arithmetic number, because the mean of its divisors is an integer number (23602258918).

Almost surely, 2^87665533111 is an apocalyptic number.

87665533111 is a deficient number, since it is larger than the sum of its proper divisors (6743502561).

87665533111 is a wasteful number, since it uses less digits than its factorization.

87665533111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743502560.

The product of its digits is 453600, while the sum is 46.

The spelling of 87665533111 in words is "eighty-seven billion, six hundred sixty-five million, five hundred thirty-three thousand, one hundred eleven".