18120115811258 has 16 divisors (see below), whose sum is σ = 27394448040960. Its totient is φ = 8988634470816.

The previous prime is 18120115811251. The next prime is 18120115811279. The reversal of 18120115811258 is 85211851102181.

It is not an unprimeable number, because it can be changed into a prime (18120115811251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33477710 + ... + 34014662.

It is an arithmetic number, because the mean of its divisors is an integer number (1712153002560).

Almost surely, 2^{18120115811258} is an apocalyptic number.

18120115811258 is a deficient number, since it is larger than the sum of its proper divisors (9274332229702).

18120115811258 is a wasteful number, since it uses less digits than its factorization.

18120115811258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669941.

The product of its (nonzero) digits is 51200, while the sum is 44.

The spelling of 18120115811258 in words is "eighteen trillion, one hundred twenty billion, one hundred fifteen million, eight hundred eleven thousand, two hundred fifty-eight".