18034398018072 has 96 divisors (see below), whose sum is σ = 50702174948880. Its totient is φ = 6005531030400.

The previous prime is 18034398018071. The next prime is 18034398018073. The reversal of 18034398018072 is 27081089343081.

It is a happy number.

18034398018072 is a `hidden beast` number, since 1 + 8 + 0 + 3 + 4 + 398 + 0 + 180 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (18034398018071) and next prime (18034398018073).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18034398018071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2609679 + ... + 6548222.

Almost surely, 2^{18034398018072} is an apocalyptic number.

18034398018072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18034398018072 is an abundant number, since it is smaller than the sum of its proper divisors (32667776930808).

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

18034398018072 is a wasteful number, since it uses less digits than its factorization.

18034398018072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9158935 (or 9158919 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 18034398018072 in words is "eighteen trillion, thirty-four billion, three hundred ninety-eight million, eighteen thousand, seventy-two".