3618712751640 has 256 divisors, whose sum is σ = 12442015825920. Its totient is φ = 824803499520.

The previous prime is 3618712751639. The next prime is 3618712751669. The reversal of 3618712751640 is 461572178163.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1062138817 + ... + 1062142223.

It is an arithmetic number, because the mean of its divisors is an integer number (48601624320).

Almost surely, 2^{3618712751640} is an apocalyptic number.

3618712751640 is a gapful number since it is divisible by the number (30) 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 3618712751640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6221007912960).

3618712751640 is an abundant number, since it is smaller than the sum of its proper divisors (8823303074280).

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

3618712751640 is a wasteful number, since it uses less digits than its factorization.

3618712751640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622 (or 6618 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 3618712751640 in words is "three trillion, six hundred eighteen billion, seven hundred twelve million, seven hundred fifty-one thousand, six hundred forty".