18536850368537 has 16 divisors (see below), whose sum is σ = 19014604416000. Its totient is φ = 18062602467840.

The previous prime is 18536850368521. The next prime is 18536850368573. The reversal of 18536850368537 is 73586305863581.

It is a cyclic number.

It is not a de Polignac number, because 18536850368537 - 2⁴ = 18536850368521 is a prime.

It is a super-2 number, since 2×18536850368537² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18536850368507) 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, 52044737 + ... + 52399697.

It is an arithmetic number, because the mean of its divisors is an integer number (1188412776000).

Almost surely, 2^{18536850368537} is an apocalyptic number.

It is an amenable number.

18536850368537 is a deficient number, since it is larger than the sum of its proper divisors (477754047463).

18536850368537 is a wasteful number, since it uses less digits than its factorization.

18536850368537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359896.

The product of its (nonzero) digits is 435456000, while the sum is 68.

The spelling of 18536850368537 in words is "eighteen trillion, five hundred thirty-six billion, eight hundred fifty million, three hundred sixty-eight thousand, five hundred thirty-seven".