218068380442 has 16 divisors (see below), whose sum is σ = 358810661664. Its totient is φ = 98574354000.

The previous prime is 218068380437. The next prime is 218068380451. The reversal of 218068380442 is 244083860812.

It is a junction number, because it is equal to n+sod(n) for n = 218068380392 and 218068380401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27377784 + ... + 27385747.

It is an arithmetic number, because the mean of its divisors is an integer number (22425666354).

Almost surely, 2^218068380442 is an apocalyptic number.

218068380442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

218068380442 is a deficient number, since it is larger than the sum of its proper divisors (140742281222).

218068380442 is a wasteful number, since it uses less digits than its factorization.

218068380442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54763725.

The product of its (nonzero) digits is 589824, while the sum is 46.

The spelling of 218068380442 in words is "two hundred eighteen billion, sixty-eight million, three hundred eighty thousand, four hundred forty-two".