643250702270 has 16 divisors (see below), whose sum is σ = 1263110470128. Its totient is φ = 233909346240.

The previous prime is 643250702209. The next prime is 643250702293. The reversal of 643250702270 is 72207052346.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2923866719 + ... + 2923866938.

It is an arithmetic number, because the mean of its divisors is an integer number (78944404383).

Almost surely, 2^643250702270 is an apocalyptic number.

643250702270 is a deficient number, since it is larger than the sum of its proper divisors (619859767858).

643250702270 is a wasteful number, since it uses less digits than its factorization.

643250702270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5847733675.

The product of its (nonzero) digits is 141120, while the sum is 38.

The spelling of 643250702270 in words is "six hundred forty-three billion, two hundred fifty million, seven hundred two thousand, two hundred seventy".