87193000811 has 4 divisors (see below), whose sum is σ = 99649143792. Its totient is φ = 74736857832.

The previous prime is 87193000751. The next prime is 87193000819. The reversal of 87193000811 is 11800039178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11800039178 = 2 ⋅5900019589.

It is not a de Polignac number, because 87193000811 - 2¹⁸ = 87192738667 is a prime.

It is a pancake number, because a pancake can be divided into 87193000811 parts by 417595 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87193000819) 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, 6228071480 + ... + 6228071493.

It is an arithmetic number, because the mean of its divisors is an integer number (24912285948).

Almost surely, 2^87193000811 is an apocalyptic number.

87193000811 is a deficient number, since it is larger than the sum of its proper divisors (12456142981).

87193000811 is a wasteful number, since it uses less digits than its factorization.

87193000811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12456142980.

The product of its (nonzero) digits is 12096, while the sum is 38.

Adding to 87193000811 its reverse (11800039178), we get a palindrome (98993039989).

The spelling of 87193000811 in words is "eighty-seven billion, one hundred ninety-three million, eight hundred eleven", and thus it is an aban number.