16640629593 has 16 divisors (see below), whose sum is σ = 26175123456. Its totient is φ = 9202191120.

The previous prime is 16640629591. The next prime is 16640629613. The reversal of 16640629593 is 39592604661.

It is not a de Polignac number, because 16640629593 - 2¹ = 16640629591 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16640629591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12780171 + ... + 12781472.

It is an arithmetic number, because the mean of its divisors is an integer number (1635945216).

Almost surely, 2^16640629593 is an apocalyptic number.

It is an amenable number.

16640629593 is a deficient number, since it is larger than the sum of its proper divisors (9534493863).

16640629593 is a wasteful number, since it uses less digits than its factorization.

16640629593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25561684.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 16640629593 in words is "sixteen billion, six hundred forty million, six hundred twenty-nine thousand, five hundred ninety-three".