645260051614 has 4 divisors (see below), whose sum is σ = 967890077424. Its totient is φ = 322630025806.

The previous prime is 645260051609. The next prime is 645260051617. The reversal of 645260051614 is 416150062546.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645260051617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161315012902 + ... + 161315012905.

It is an arithmetic number, because the mean of its divisors is an integer number (241972519356).

Almost surely, 2^645260051614 is an apocalyptic number.

645260051614 is a deficient number, since it is larger than the sum of its proper divisors (322630025810).

645260051614 is a wasteful number, since it uses less digits than its factorization.

645260051614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322630025809.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 645260051614 in words is "six hundred forty-five billion, two hundred sixty million, fifty-one thousand, six hundred fourteen".