16640072751 has 8 divisors (see below), whose sum is σ = 22196226304. Its totient is φ = 11088650520.

The previous prime is 16640072741. The next prime is 16640072759. The reversal of 16640072751 is 15727004661.

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

It is not a de Polignac number, because 16640072751 - 2⁷ = 16640072623 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1174615 + ... + 1188696.

It is an arithmetic number, because the mean of its divisors is an integer number (2774528288).

Almost surely, 2^16640072751 is an apocalyptic number.

16640072751 is a deficient number, since it is larger than the sum of its proper divisors (5556153553).

16640072751 is a wasteful number, since it uses less digits than its factorization.

16640072751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365661.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 16640072751 in words is "sixteen billion, six hundred forty million, seventy-two thousand, seven hundred fifty-one".