18577434213 has 64 divisors (see below), whose sum is σ = 31364444160. Its totient is φ = 10780862400.

The previous prime is 18577434209. The next prime is 18577434223. The reversal of 18577434213 is 31243477581.

18577434213 is a `hidden beast` number, since 18 + 577 + 43 + 4 + 21 + 3 = 666.

It is not a de Polignac number, because 18577434213 - 2² = 18577434209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18577434223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 556978 + ... + 589388.

It is an arithmetic number, because the mean of its divisors is an integer number (490069440).

Almost surely, 2^18577434213 is an apocalyptic number.

18577434213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18577434213 is a deficient number, since it is larger than the sum of its proper divisors (12787009947).

18577434213 is a wasteful number, since it uses less digits than its factorization.

18577434213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32527 (or 32521 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The spelling of 18577434213 in words is "eighteen billion, five hundred seventy-seven million, four hundred thirty-four thousand, two hundred thirteen".