16340450645 has 8 divisors (see below), whose sum is σ = 19609240920.
Its totient is φ = 13071893760.
The previous prime is 16340450639. The next prime is 16340450653. The reversal of 16340450645 is 54605404361.
It can be written as a sum of positive squares in 4 ways, for example, as 3686675524 + 12653775121 = 60718^2 + 112489^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is a de Polignac number, because none of the positive numbers 2k-16340450645 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 16340450599 and 16340450608.
It is a congruent number.
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, 198401 + ... + 268409.
It is an arithmetic number, because the mean of its divisors is an integer number (2451155115).
Almost surely, 216340450645 is an apocalyptic number.
It is an amenable number.
16340450645 is a deficient number, since it is larger than the sum of its proper divisors (3268790275).
16340450645 is an equidigital number, since it uses as much as digits as its factorization.
16340450645 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 116695.
The product of its (nonzero) digits is 172800, while the sum is 38.
The spelling of 16340450645 in words is "sixteen billion, three hundred forty million, four hundred fifty thousand, six hundred forty-five".