18356353620137 has 16 divisors (see below), whose sum is σ = 19795546962240. Its totient is φ = 16921047614400.

The previous prime is 18356353620127. The next prime is 18356353620161. The reversal of 18356353620137 is 73102635365381.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18356353620137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18356353620127) 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, 70001414 + ... + 70263152.

It is an arithmetic number, because the mean of its divisors is an integer number (1237221685140).

Almost surely, 2^{18356353620137} is an apocalyptic number.

It is an amenable number.

18356353620137 is a deficient number, since it is larger than the sum of its proper divisors (1439193342103).

18356353620137 is a wasteful number, since it uses less digits than its factorization.

18356353620137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269144.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 18356353620137 in words is "eighteen trillion, three hundred fifty-six billion, three hundred fifty-three million, six hundred twenty thousand, one hundred thirty-seven".