118286087821 has 16 divisors (see below), whose sum is σ = 129535737408. Its totient is φ = 107119584000.

The previous prime is 118286087819. The next prime is 118286087851. The reversal of 118286087821 is 128780682811.

It is not a de Polignac number, because 118286087821 - 2¹ = 118286087819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118286087851) 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, 6315771 + ... + 6334471.

It is an arithmetic number, because the mean of its divisors is an integer number (8095983588).

Almost surely, 2^118286087821 is an apocalyptic number.

118286087821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118286087821 is a deficient number, since it is larger than the sum of its proper divisors (11249649587).

118286087821 is a wasteful number, since it uses less digits than its factorization.

118286087821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20892.

The product of its (nonzero) digits is 688128, while the sum is 52.

The spelling of 118286087821 in words is "one hundred eighteen billion, two hundred eighty-six million, eighty-seven thousand, eight hundred twenty-one".