18157517350066 has 16 divisors (see below), whose sum is σ = 27281715867360. Its totient is φ = 9063613609920.

The previous prime is 18157517350039. The next prime is 18157517350069. The reversal of 18157517350066 is 66005371575181.

It is a junction number, because it is equal to n+sod(n) for n = 18157517349989 and 18157517350016.

It is not an unprimeable number, because it can be changed into a prime (18157517350069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23690745 + ... + 24445171.

It is an arithmetic number, because the mean of its divisors is an integer number (1705107241710).

Almost surely, 2^{18157517350066} is an apocalyptic number.

18157517350066 is a deficient number, since it is larger than the sum of its proper divisors (9124198517294).

18157517350066 is a wasteful number, since it uses less digits than its factorization.

18157517350066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774489.

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 18157517350066 in words is "eighteen trillion, one hundred fifty-seven billion, five hundred seventeen million, three hundred fifty thousand, sixty-six".