643116546030 has 48 divisors (see below), whose sum is σ = 1795476402000. Its totient is φ = 146998067328.

The previous prime is 643116546029. The next prime is 643116546031. The reversal of 643116546030 is 30645611346.

It is an interprime number because it is at equal distance from previous prime (643116546029) and next prime (643116546031).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 643116546030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643116546031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218745655 + ... + 218748594.

It is an arithmetic number, because the mean of its divisors is an integer number (37405758375).

Almost surely, 2^643116546030 is an apocalyptic number.

643116546030 is an abundant number, since it is smaller than the sum of its proper divisors (1152359855970).

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

643116546030 is a wasteful number, since it uses less digits than its factorization.

643116546030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437494273 (or 437494266 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 643116546030 in words is "six hundred forty-three billion, one hundred sixteen million, five hundred forty-six thousand, thirty".