18324777744 has 600 divisors, whose sum is σ = 67258597952. Its totient is φ = 4800902400.

The previous prime is 18324777739. The next prime is 18324777749. The reversal of 18324777744 is 44777742381.

It is an interprime number because it is at equal distance from previous prime (18324777739) and next prime (18324777749).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (18324777749) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 121356069 + ... + 121356219.

Almost surely, 2^18324777744 is an apocalyptic number.

18324777744 is a gapful number since it is divisible by the number (14) 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 18324777744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33629298976).

18324777744 is an abundant number, since it is smaller than the sum of its proper divisors (48933820208).

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

18324777744 is an equidigital number, since it uses as much as digits as its factorization.

18324777744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 176 counting only the distinct ones).

The product of its digits is 7375872, while the sum is 54.

The spelling of 18324777744 in words is "eighteen billion, three hundred twenty-four million, seven hundred seventy-seven thousand, seven hundred forty-four".