645622152235 has 4 divisors (see below), whose sum is σ = 774746582688. Its totient is φ = 516497721784.

The previous prime is 645622152229. The next prime is 645622152281. The reversal of 645622152235 is 532251226546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 645622152235 - 2⁹ = 645622151723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 645622152191 and 645622152200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64562215219 + ... + 64562215228.

It is an arithmetic number, because the mean of its divisors is an integer number (193686645672).

Almost surely, 2^645622152235 is an apocalyptic number.

645622152235 is a deficient number, since it is larger than the sum of its proper divisors (129124430453).

645622152235 is a wasteful number, since it uses less digits than its factorization.

645622152235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129124430452.

The product of its digits is 864000, while the sum is 43.

The spelling of 645622152235 in words is "six hundred forty-five billion, six hundred twenty-two million, one hundred fifty-two thousand, two hundred thirty-five".