18152051812240 has 20 divisors (see below), whose sum is σ = 42203520463644. Its totient is φ = 7260820724864.

The previous prime is 18152051812211. The next prime is 18152051812243. The reversal of 18152051812240 is 4221815025181.

It can be written as a sum of positive squares in 2 ways, for example, as 5805767354256 + 12346284457984 = 2409516^2 + 3513728^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 18152051812193 and 18152051812202.

It is not an unprimeable number, because it can be changed into a prime (18152051812243) 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, 113450323747 + ... + 113450323906.

Almost surely, 2^{18152051812240} is an apocalyptic number.

18152051812240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18152051812240 is an abundant number, since it is smaller than the sum of its proper divisors (24051468651404).

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

18152051812240 is a wasteful number, since it uses less digits than its factorization.

18152051812240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226900647666 (or 226900647660 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 40.

The spelling of 18152051812240 in words is "eighteen trillion, one hundred fifty-two billion, fifty-one million, eight hundred twelve thousand, two hundred forty".