87205826111 has 8 divisors (see below), whose sum is σ = 91194786144. Its totient is φ = 83233316320.

The previous prime is 87205826107. The next prime is 87205826117. The reversal of 87205826111 is 11162850278.

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

It is not a de Polignac number, because 87205826111 - 2² = 87205826107 is a prime.

It is a super-2 number, since 2×87205826111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87205826117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4101716 + ... + 4122921.

It is an arithmetic number, because the mean of its divisors is an integer number (11399348268).

Almost surely, 2^87205826111 is an apocalyptic number.

87205826111 is a deficient number, since it is larger than the sum of its proper divisors (3988960033).

87205826111 is a wasteful number, since it uses less digits than its factorization.

87205826111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8225121.

The product of its (nonzero) digits is 53760, while the sum is 41.

The spelling of 87205826111 in words is "eighty-seven billion, two hundred five million, eight hundred twenty-six thousand, one hundred eleven".