645210873158 has 8 divisors (see below), whose sum is σ = 1024746680952. Its totient is φ = 303628646176.

The previous prime is 645210873137. The next prime is 645210873191. The reversal of 645210873158 is 851378012546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9488395160 + ... + 9488395227.

It is an arithmetic number, because the mean of its divisors is an integer number (128093335119).

Almost surely, 2^645210873158 is an apocalyptic number.

645210873158 is a deficient number, since it is larger than the sum of its proper divisors (379535807794).

645210873158 is a wasteful number, since it uses less digits than its factorization.

645210873158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18976790406.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 645210873158 in words is "six hundred forty-five billion, two hundred ten million, eight hundred seventy-three thousand, one hundred fifty-eight".