645633045050 has 48 divisors (see below), whose sum is σ = 1419756629760. Its totient is φ = 213726797760.

The previous prime is 645633045017. The next prime is 645633045143. The reversal of 645633045050 is 50540336546.

645633045050 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 = 645633044989 and 645633045007.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31794434 + ... + 31814733.

It is an arithmetic number, because the mean of its divisors is an integer number (29578263120).

Almost surely, 2^645633045050 is an apocalyptic number.

645633045050 is an abundant number, since it is smaller than the sum of its proper divisors (774123584710).

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

645633045050 is a wasteful number, since it uses less digits than its factorization.

645633045050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63609215 (or 63609210 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 41.

The spelling of 645633045050 in words is "six hundred forty-five billion, six hundred thirty-three million, forty-five thousand, fifty".