101818919243 has 2 divisors, whose sum is σ = 101818919244. Its totient is φ = 101818919242.

The previous prime is 101818919233. The next prime is 101818919263. The reversal of 101818919243 is 342919818101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101818919243 - 2⁴ = 101818919227 is a prime.

It is a super-3 number, since 3×101818919243³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (101818919233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50909459621 + 50909459622.

It is an arithmetic number, because the mean of its divisors is an integer number (50909459622).

Almost surely, 2^101818919243 is an apocalyptic number.

101818919243 is a deficient number, since it is larger than the sum of its proper divisors (1).

101818919243 is an equidigital number, since it uses as much as digits as its factorization.

101818919243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 47.

The spelling of 101818919243 in words is "one hundred one billion, eight hundred eighteen million, nine hundred nineteen thousand, two hundred forty-three".