643115130254 has 8 divisors (see below), whose sum is σ = 968258840040. Its totient is φ = 320362183576.

The previous prime is 643115130241. The next prime is 643115130257. The reversal of 643115130254 is 452031511346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×643115130254² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643115130257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597690104 + ... + 597691179.

It is an arithmetic number, because the mean of its divisors is an integer number (121032355005).

Almost surely, 2^643115130254 is an apocalyptic number.

643115130254 is a deficient number, since it is larger than the sum of its proper divisors (325143709786).

643115130254 is a wasteful number, since it uses less digits than its factorization.

643115130254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195381554.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 643115130254 in words is "six hundred forty-three billion, one hundred fifteen million, one hundred thirty thousand, two hundred fifty-four".