645415602231 has 8 divisors (see below), whose sum is σ = 861215597424. Its totient is φ = 429946337600.

The previous prime is 645415602197. The next prime is 645415602239. The reversal of 645415602231 is 132206514546.

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

It is a cyclic number.

It is not a de Polignac number, because 645415602231 - 2¹³ = 645415594039 is a prime.

It is a super-2 number, since 2×645415602231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 645415602231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645415602239) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 82678086 + ... + 82685891.

It is an arithmetic number, because the mean of its divisors is an integer number (107651949678).

Almost surely, 2^645415602231 is an apocalyptic number.

645415602231 is a deficient number, since it is larger than the sum of its proper divisors (215799995193).

645415602231 is a wasteful number, since it uses less digits than its factorization.

645415602231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165365281.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 645415602231 in words is "six hundred forty-five billion, four hundred fifteen million, six hundred two thousand, two hundred thirty-one".