643141555230 has 64 divisors (see below), whose sum is σ = 1658729352960. Its totient is φ = 159006718464.

The previous prime is 643141555193. The next prime is 643141555237. The reversal of 643141555230 is 32555141346.

It is a happy number.

It is a super-3 number, since 3×643141555230³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643141555237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9376740 + ... + 9445079.

It is an arithmetic number, because the mean of its divisors is an integer number (25917646140).

Almost surely, 2^643141555230 is an apocalyptic number.

643141555230 is an abundant number, since it is smaller than the sum of its proper divisors (1015587797730).

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

643141555230 is a wasteful number, since it uses less digits than its factorization.

643141555230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18821913.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 643141555230 its reverse (32555141346), we get a palindrome (675696696576).

The spelling of 643141555230 in words is "six hundred forty-three billion, one hundred forty-one million, five hundred fifty-five thousand, two hundred thirty".