643260062346 has 16 divisors (see below), whose sum is σ = 1403476499808. Its totient is φ = 194927291600.

The previous prime is 643260062329. The next prime is 643260062381.

643260062346 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 643260062298 and 643260062307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4873182225 + ... + 4873182356.

It is an arithmetic number, because the mean of its divisors is an integer number (87717281238).

Almost surely, 2^643260062346 is an apocalyptic number.

643260062346 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

643260062346 is an abundant number, since it is smaller than the sum of its proper divisors (760216437462).

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

643260062346 is a wasteful number, since it uses less digits than its factorization.

643260062346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9746364597.

The product of its (nonzero) digits is 746496, while the sum is 42.

It can be divided in two parts, 6432600 and 62346, that added together give a palindrome (6494946).

The spelling of 643260062346 in words is "six hundred forty-three billion, two hundred sixty million, sixty-two thousand, three hundred forty-six".