18120677505248 has 24 divisors (see below), whose sum is σ = 36163783621728. Its totient is φ = 8936224521984.

The previous prime is 18120677505241. The next prime is 18120677505251. The reversal of 18120677505248 is 84250577602181.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18120677505193 and 18120677505202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18120677505241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3878567336 + ... + 3878572007.

It is an arithmetic number, because the mean of its divisors is an integer number (1506824317572).

Almost surely, 2^{18120677505248} is an apocalyptic number.

It is an amenable number.

18120677505248 is a deficient number, since it is larger than the sum of its proper divisors (18043106116480).

18120677505248 is an equidigital number, since it uses as much as digits as its factorization.

18120677505248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7757139426 (or 7757139418 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 56.

The spelling of 18120677505248 in words is "eighteen trillion, one hundred twenty billion, six hundred seventy-seven million, five hundred five thousand, two hundred forty-eight".