645633045046 has 32 divisors (see below), whose sum is σ = 1091541733632. Its totient is φ = 283828088160.

The previous prime is 645633045017. The next prime is 645633045143. The reversal of 645633045046 is 640540336546.

645633045046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 645633044987 and 645633045005.

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, 2238796 + ... + 2510671.

It is an arithmetic number, because the mean of its divisors is an integer number (34110679176).

Almost surely, 2^645633045046 is an apocalyptic number.

645633045046 is a deficient number, since it is larger than the sum of its proper divisors (445908688586).

645633045046 is a wasteful number, since it uses less digits than its factorization.

645633045046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749684.

The product of its (nonzero) digits is 3110400, while the sum is 46.

The spelling of 645633045046 in words is "six hundred forty-five billion, six hundred thirty-three million, forty-five thousand, forty-six".