120578238518 has 4 divisors (see below), whose sum is σ = 180867357780. Its totient is φ = 60289119258.

The previous prime is 120578238509. The next prime is 120578238551. The reversal of 120578238518 is 815832875021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 815832875021 = 227 ⋅3593977423.

It is a super-2 number, since 2×120578238518² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30144559628 + ... + 30144559631.

It is an arithmetic number, because the mean of its divisors is an integer number (45216839445).

Almost surely, 2^120578238518 is an apocalyptic number.

120578238518 is a deficient number, since it is larger than the sum of its proper divisors (60289119262).

120578238518 is an equidigital number, since it uses as much as digits as its factorization.

120578238518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60289119261.

The product of its (nonzero) digits is 1075200, while the sum is 50.

The spelling of 120578238518 in words is "one hundred twenty billion, five hundred seventy-eight million, two hundred thirty-eight thousand, five hundred eighteen".