1645202343104 has 84 divisors (see below), whose sum is σ = 3364013409120. Its totient is φ = 798294666240.

The previous prime is 1645202343053. The next prime is 1645202343119. The reversal of 1645202343104 is 4013432025461.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34058489 + ... + 34106759.

It is an arithmetic number, because the mean of its divisors is an integer number (40047778680).

Almost surely, 2^{1645202343104} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1645202343104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682006704560).

1645202343104 is an abundant number, since it is smaller than the sum of its proper divisors (1718811066016).

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

1645202343104 is an equidigital number, since it uses as much as digits as its factorization.

1645202343104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48746 (or 48699 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 1645202343104 its reverse (4013432025461), we get a palindrome (5658634368565).

The spelling of 1645202343104 in words is "one trillion, six hundred forty-five billion, two hundred two million, three hundred forty-three thousand, one hundred four".