645400114450 has 96 divisors (see below), whose sum is σ = 1505347151616. Its totient is φ = 200404488960.

The previous prime is 645400114433. The next prime is 645400114459. The reversal of 645400114450 is 54411004546.

It is not an unprimeable number, because it can be changed into a prime (645400114459) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1097022 + ... + 1579321.

It is an arithmetic number, because the mean of its divisors is an integer number (15680699496).

Almost surely, 2^645400114450 is an apocalyptic number.

645400114450 is an abundant number, since it is smaller than the sum of its proper divisors (859947037166).

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

645400114450 is a wasteful number, since it uses less digits than its factorization.

645400114450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676428 (or 2676423 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 645400114450 its reverse (54411004546), we get a palindrome (699811118996).

The spelling of 645400114450 in words is "six hundred forty-five billion, four hundred million, one hundred fourteen thousand, four hundred fifty".