120163280018 has 4 divisors (see below), whose sum is σ = 180244920030. Its totient is φ = 60081640008.

The previous prime is 120163279981. The next prime is 120163280099. The reversal of 120163280018 is 810082361021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 810082361021 = 953 ⋅850033957.

It can be written as a sum of positive squares in only one way, i.e., 105146493169 + 15016786849 = 324263^2 + 122543^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30040820003 + ... + 30040820006.

Almost surely, 2^120163280018 is an apocalyptic number.

120163280018 is a deficient number, since it is larger than the sum of its proper divisors (60081640012).

120163280018 is an equidigital number, since it uses as much as digits as its factorization.

120163280018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60081640011.

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 120163280018 in words is "one hundred twenty billion, one hundred sixty-three million, two hundred eighty thousand, eighteen".