645054050445 has 16 divisors (see below), whose sum is σ = 1179527406720. Its totient is φ = 294881851584.

The previous prime is 645054050423. The next prime is 645054050489. The reversal of 645054050445 is 544050450546.

It is not a de Polignac number, because 645054050445 - 2⁵ = 645054050413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 645054050397 and 645054050406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3071685850 + ... + 3071686059.

It is an arithmetic number, because the mean of its divisors is an integer number (73720462920).

Almost surely, 2^645054050445 is an apocalyptic number.

It is an amenable number.

645054050445 is a deficient number, since it is larger than the sum of its proper divisors (534473356275).

645054050445 is a wasteful number, since it uses less digits than its factorization.

645054050445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143371924.

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 645054050445 in words is "six hundred forty-five billion, fifty-four million, fifty thousand, four hundred forty-five".