321640051434446 has 8 divisors (see below), whose sum is σ = 482500664389920. Its totient is φ = 160806496637808.

The previous prime is 321640051434347. The next prime is 321640051434451. The reversal of 321640051434446 is 644434150046123.

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

It is a self number, because there is not a number n which added to its sum of digits gives 321640051434446.

It is a congruent number.

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, 6764509991 + ... + 6764557538.

It is an arithmetic number, because the mean of its divisors is an integer number (60312583048740).

Almost surely, 2^{321640051434446} is an apocalyptic number.

321640051434446 is a deficient number, since it is larger than the sum of its proper divisors (160860612955474).

321640051434446 is a wasteful number, since it uses less digits than its factorization.

321640051434446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13529079418.

The product of its (nonzero) digits is 3317760, while the sum is 47.

The spelling of 321640051434446 in words is "three hundred twenty-one trillion, six hundred forty billion, fifty-one million, four hundred thirty-four thousand, four hundred forty-six".