645233145645 has 16 divisors (see below), whose sum is σ = 1126225127232. Its totient is φ = 312840312960.

The previous prime is 645233145631. The next prime is 645233145659. The reversal of 645233145645 is 546541332546.

It is an interprime number because it is at equal distance from previous prime (645233145631) and next prime (645233145659).

It is not a de Polignac number, because 645233145645 - 2⁹ = 645233145133 is a prime.

It is a super-3 number, since 3×645233145645³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 645233145594 and 645233145603.

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, 1955251792 + ... + 1955252121.

It is an arithmetic number, because the mean of its divisors is an integer number (70389070452).

Almost surely, 2^645233145645 is an apocalyptic number.

It is an amenable number.

645233145645 is a deficient number, since it is larger than the sum of its proper divisors (480991981587).

645233145645 is a wasteful number, since it uses less digits than its factorization.

645233145645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910503932.

The product of its digits is 5184000, while the sum is 48.

The spelling of 645233145645 in words is "six hundred forty-five billion, two hundred thirty-three million, one hundred forty-five thousand, six hundred forty-five".