16840657344946 has 8 divisors (see below), whose sum is σ = 25328709841644. Its totient is φ = 8397754064400.

The previous prime is 16840657344839. The next prime is 16840657344949. The reversal of 16840657344946 is 64944375604861.

It can be written as a sum of positive squares in 2 ways, for example, as 16700340426025 + 140316918921 = 4086605^2 + 374589^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16840657344949) 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, 11287303105 + ... + 11287304596.

Almost surely, 2^{16840657344946} is an apocalyptic number.

16840657344946 is a deficient number, since it is larger than the sum of its proper divisors (8488052496698).

16840657344946 is a wasteful number, since it uses less digits than its factorization.

16840657344946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22574608076.

The product of its (nonzero) digits is 418037760, while the sum is 67.

The spelling of 16840657344946 in words is "sixteen trillion, eight hundred forty billion, six hundred fifty-seven million, three hundred forty-four thousand, nine hundred forty-six".