16640072753 has 24 divisors (see below), whose sum is σ = 18222461784. Its totient is φ = 15141109760.

The previous prime is 16640072741. The next prime is 16640072759. The reversal of 16640072753 is 35727004661.

It can be written as a sum of positive squares in 12 ways, for example, as 12785277184 + 3854795569 = 113072^2 + 62087^2 .

It is not a de Polignac number, because 16640072753 - 2⁴ = 16640072737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

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 16640072753.

It is not an unprimeable number, because it can be changed into a prime (16640072759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3226625 + ... + 3231777.

It is an arithmetic number, because the mean of its divisors is an integer number (759269241).

Almost surely, 2^16640072753 is an apocalyptic number.

It is an amenable number.

16640072753 is a deficient number, since it is larger than the sum of its proper divisors (1582389031).

16640072753 is a wasteful number, since it uses less digits than its factorization.

16640072753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5365 (or 5324 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 16640072753 in words is "sixteen billion, six hundred forty million, seventy-two thousand, seven hundred fifty-three".