645606600441 has 32 divisors (see below), whose sum is σ = 970232220672. Its totient is φ = 378466724160.

The previous prime is 645606600389. The next prime is 645606600451. The reversal of 645606600441 is 144006606546.

It is not a de Polignac number, because 645606600441 - 2²⁹ = 645069729529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 645606600393 and 645606600402.

It is not an unprimeable number, because it can be changed into a prime (645606600451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2062450 + ... + 2354763.

It is an arithmetic number, because the mean of its divisors is an integer number (30319756896).

Almost surely, 2^645606600441 is an apocalyptic number.

It is an amenable number.

645606600441 is a deficient number, since it is larger than the sum of its proper divisors (324625620231).

645606600441 is a wasteful number, since it uses less digits than its factorization.

645606600441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417373.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 645606600441 in words is "six hundred forty-five billion, six hundred six million, six hundred thousand, four hundred forty-one".