645153602433 has 8 divisors (see below), whose sum is σ = 860212315488. Its totient is φ = 430098645504.

The previous prime is 645153602417. The next prime is 645153602441. The reversal of 645153602433 is 334206351546.

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

It is not a de Polignac number, because 645153602433 - 2⁴ = 645153602417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645153602633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510291 + ... + 1245272.

It is an arithmetic number, because the mean of its divisors is an integer number (107526539436).

Almost surely, 2^645153602433 is an apocalyptic number.

It is an amenable number.

645153602433 is a deficient number, since it is larger than the sum of its proper divisors (215058713055).

645153602433 is a wasteful number, since it uses less digits than its factorization.

645153602433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878063.

The product of its (nonzero) digits is 777600, while the sum is 42.

Adding to 645153602433 its reverse (334206351546), we get a palindrome (979359953979).

The spelling of 645153602433 in words is "six hundred forty-five billion, one hundred fifty-three million, six hundred two thousand, four hundred thirty-three".