645610335045 has 32 divisors (see below), whose sum is σ = 1117294147200. Its totient is φ = 316450969344.

The previous prime is 645610335037. The next prime is 645610335049. The reversal of 645610335045 is 540533016546.

It is not a de Polignac number, because 645610335045 - 2³ = 645610335037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 645610334988 and 645610335006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645610335049) 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, 7184215 + ... + 7273524.

It is an arithmetic number, because the mean of its divisors is an integer number (34915442100).

Almost surely, 2^645610335045 is an apocalyptic number.

645610335045 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

645610335045 is a deficient number, since it is larger than the sum of its proper divisors (471683812155).

645610335045 is a wasteful number, since it uses less digits than its factorization.

645610335045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14457989.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 645610335045 in words is "six hundred forty-five billion, six hundred ten million, three hundred thirty-five thousand, forty-five".