643794050630 has 32 divisors (see below), whose sum is σ = 1197789720480. Its totient is φ = 249002853120.

The previous prime is 643794050587. The next prime is 643794050671. The reversal of 643794050630 is 36050497346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8908079 + ... + 8980058.

It is an arithmetic number, because the mean of its divisors is an integer number (37430928765).

Almost surely, 2^643794050630 is an apocalyptic number.

643794050630 is a deficient number, since it is larger than the sum of its proper divisors (553995669850).

643794050630 is a wasteful number, since it uses less digits than its factorization.

643794050630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17888264.

The product of its (nonzero) digits is 1632960, while the sum is 47.

The spelling of 643794050630 in words is "six hundred forty-three billion, seven hundred ninety-four million, fifty thousand, six hundred thirty".