18118766451936 has 192 divisors, whose sum is σ = 52254667745280. Its totient is φ = 5471592445440.

The previous prime is 18118766451923. The next prime is 18118766451949. The reversal of 18118766451936 is 63915466781181.

It is an interprime number because it is at equal distance from previous prime (18118766451923) and next prime (18118766451949).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176608591 + ... + 176711153.

It is an arithmetic number, because the mean of its divisors is an integer number (272159727840).

Almost surely, 2^{18118766451936} is an apocalyptic number.

18118766451936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18118766451936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26127333872640).

18118766451936 is an abundant number, since it is smaller than the sum of its proper divisors (34135901293344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18118766451936 is a wasteful number, since it uses less digits than its factorization.

18118766451936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106829 (or 106821 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 66.

The spelling of 18118766451936 in words is "eighteen trillion, one hundred eighteen billion, seven hundred sixty-six million, four hundred fifty-one thousand, nine hundred thirty-six".