643323502014 has 16 divisors (see below), whose sum is σ = 1362332122128. Its totient is φ = 201826980992.

The previous prime is 643323502007. The next prime is 643323502021. The reversal of 643323502014 is 410205323346.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (643323502007) and next prime (643323502021).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3153546477 + ... + 3153546680.

It is an arithmetic number, because the mean of its divisors is an integer number (85145757633).

Almost surely, 2^643323502014 is an apocalyptic number.

643323502014 is an abundant number, since it is smaller than the sum of its proper divisors (719008620114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643323502014 is a wasteful number, since it uses less digits than its factorization.

643323502014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6307093179.

The product of its (nonzero) digits is 51840, while the sum is 33.

The spelling of 643323502014 in words is "six hundred forty-three billion, three hundred twenty-three million, five hundred two thousand, fourteen".