18700146243243 has 40 divisors (see below), whose sum is σ = 28090854665280. Its totient is φ = 12397213548720.

The previous prime is 18700146243241. The next prime is 18700146243283. The reversal of 18700146243243 is 34234264100781.

18700146243243 is a `hidden beast` number, since 1 + 8 + 7 + 0 + 0 + 14 + 624 + 3 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 18700146243243 - 2¹ = 18700146243241 is a prime.

It is a super-2 number, since 2×18700146243243² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18700146243241) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19826128 + ... + 20747906.

It is an arithmetic number, because the mean of its divisors is an integer number (702271366632).

Almost surely, 2^{18700146243243} is an apocalyptic number.

18700146243243 is a deficient number, since it is larger than the sum of its proper divisors (9390708422037).

18700146243243 is a wasteful number, since it uses less digits than its factorization.

18700146243243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923189 (or 923180 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 18700146243243 in words is "eighteen trillion, seven hundred billion, one hundred forty-six million, two hundred forty-three thousand, two hundred forty-three".