16645140337 has 8 divisors (see below), whose sum is σ = 19035720000. Its totient is φ = 14257736304.

The previous prime is 16645140277. The next prime is 16645140349. The reversal of 16645140337 is 73304154661.

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

It is not a de Polignac number, because 16645140337 - 2¹⁵ = 16645107569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16645140337.

It is not an unprimeable number, because it can be changed into a prime (16645140037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 782662 + ... + 803647.

It is an arithmetic number, because the mean of its divisors is an integer number (2379465000).

Almost surely, 2^16645140337 is an apocalyptic number.

It is an amenable number.

16645140337 is a deficient number, since it is larger than the sum of its proper divisors (2390579663).

16645140337 is a wasteful number, since it uses less digits than its factorization.

16645140337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587815.

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 16645140337 its reverse (73304154661), we get a palindrome (89949294998).

The spelling of 16645140337 in words is "sixteen billion, six hundred forty-five million, one hundred forty thousand, three hundred thirty-seven".