18353686666870 has 8 divisors (see below), whose sum is σ = 33036636000384. Its totient is φ = 7341474666744.

The previous prime is 18353686666859. The next prime is 18353686666943. The reversal of 18353686666870 is 7866668635381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18353686666870² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18353686666793 and 18353686666802.

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, 917684333334 + ... + 917684333353.

It is an arithmetic number, because the mean of its divisors is an integer number (4129579500048).

Almost surely, 2^{18353686666870} is an apocalyptic number.

18353686666870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18353686666870 is a deficient number, since it is larger than the sum of its proper divisors (14682949333514).

18353686666870 is a wasteful number, since it uses less digits than its factorization.

18353686666870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835368666694.

The product of its (nonzero) digits is 1254113280, while the sum is 73.

The spelling of 18353686666870 in words is "eighteen trillion, three hundred fifty-three billion, six hundred eighty-six million, six hundred sixty-six thousand, eight hundred seventy".