438646646834 has 8 divisors (see below), whose sum is σ = 717785422128. Its totient is φ = 199384839460.

The previous prime is 438646646791. The next prime is 438646646881.

438646646834 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9969241952 + ... + 9969241995.

It is an arithmetic number, because the mean of its divisors is an integer number (89723177766).

Almost surely, 2^438646646834 is an apocalyptic number.

438646646834 is a deficient number, since it is larger than the sum of its proper divisors (279138775294).

438646646834 is a wasteful number, since it uses less digits than its factorization.

438646646834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19938483960.

The product of its digits is 191102976, while the sum is 62.

The spelling of 438646646834 in words is "four hundred thirty-eight billion, six hundred forty-six million, six hundred forty-six thousand, eight hundred thirty-four".