2187640240330 has 8 divisors (see below), whose sum is σ = 3937752432612. Its totient is φ = 875056096128.

The previous prime is 2187640240327. The next prime is 2187640240381. The reversal of 2187640240330 is 330420467812.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1987008809769 + 200631430561 = 1409613^2 + 447919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2187640240330³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109382012007 + ... + 109382012026.

Almost surely, 2^{2187640240330} is an apocalyptic number.

2187640240330 is a deficient number, since it is larger than the sum of its proper divisors (1750112192282).

2187640240330 is a wasteful number, since it uses less digits than its factorization.

2187640240330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218764024040.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 2187640240330 in words is "two trillion, one hundred eighty-seven billion, six hundred forty million, two hundred forty thousand, three hundred thirty".