18136072636 has 12 divisors (see below), whose sum is σ = 34623411480. Its totient is φ = 8243669360.

The previous prime is 18136072627. The next prime is 18136072649. The reversal of 18136072636 is 63627063181.

It is a junction number, because it is equal to n+sod(n) for n = 18136072592 and 18136072601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206091691 + ... + 206091778.

It is an arithmetic number, because the mean of its divisors is an integer number (2885284290).

Almost surely, 2^18136072636 is an apocalyptic number.

It is an amenable number.

18136072636 is a deficient number, since it is larger than the sum of its proper divisors (16487338844).

18136072636 is a wasteful number, since it uses less digits than its factorization.

18136072636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412183484 (or 412183482 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 18136072636 in words is "eighteen billion, one hundred thirty-six million, seventy-two thousand, six hundred thirty-six".