643310420104 has 16 divisors (see below), whose sum is σ = 1315862223120. Its totient is φ = 292413827280.

The previous prime is 643310420101. The next prime is 643310420117. The reversal of 643310420104 is 401024013346.

It is a super-2 number, since 2×643310420104² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (643310420101) 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, 3655172754 + ... + 3655172929.

It is an arithmetic number, because the mean of its divisors is an integer number (82241388945).

Almost surely, 2^643310420104 is an apocalyptic number.

It is an amenable number.

643310420104 is an abundant number, since it is smaller than the sum of its proper divisors (672551803016).

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

643310420104 is a wasteful number, since it uses less digits than its factorization.

643310420104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7310345700 (or 7310345696 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 643310420104 in words is "six hundred forty-three billion, three hundred ten million, four hundred twenty thousand, one hundred four".