87936028511 has 4 divisors (see below), whose sum is σ = 90772674624. Its totient is φ = 85099382400.

The previous prime is 87936028507. The next prime is 87936028619. The reversal of 87936028511 is 11582063978.

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 87936028511 - 2² = 87936028507 is a prime.

It is a super-2 number, since 2×87936028511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87936028511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87932028511) 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, 1418323010 + ... + 1418323071.

It is an arithmetic number, because the mean of its divisors is an integer number (22693168656).

Almost surely, 2^87936028511 is an apocalyptic number.

87936028511 is a deficient number, since it is larger than the sum of its proper divisors (2836646113).

87936028511 is a wasteful number, since it uses less digits than its factorization.

87936028511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836646112.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 87936028511 in words is "eighty-seven billion, nine hundred thirty-six million, twenty-eight thousand, five hundred eleven".