618200070050 has 24 divisors (see below), whose sum is σ = 1153776567636. Its totient is φ = 246436063040.

The previous prime is 618200070011. The next prime is 618200070133. The reversal of 618200070050 is 50070002816.

It is a Cunningham number, because it is equal to 786257²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 569733607249 + 48466462801 = 754807^2 + 220151^2 .

It is a junction number, because it is equal to n+sod(n) for n = 618200069995 and 618200070022.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21084329 + ... + 21113628.

Almost surely, 2^618200070050 is an apocalyptic number.

618200070050 is a deficient number, since it is larger than the sum of its proper divisors (535576497586).

618200070050 is a wasteful number, since it uses less digits than its factorization.

618200070050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42198262 (or 42198257 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 618200070050 its reverse (50070002816), we get a palindrome (668270072866).

The spelling of 618200070050 in words is "six hundred eighteen billion, two hundred million, seventy thousand, fifty".