17642416645 has 32 divisors (see below), whose sum is σ = 25191887616. Its totient is φ = 11609049600.

The previous prime is 17642416643. The next prime is 17642416657. The reversal of 17642416645 is 54661424671.

It is a happy number.

It is not a de Polignac number, because 17642416645 - 2¹ = 17642416643 is a prime.

It is a super-2 number, since 2×17642416645² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17642416595 and 17642416604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17642416643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13239 + ... + 188308.

It is an arithmetic number, because the mean of its divisors is an integer number (787246488).

Almost surely, 2^17642416645 is an apocalyptic number.

It is an amenable number.

17642416645 is a deficient number, since it is larger than the sum of its proper divisors (7549470971).

17642416645 is a wasteful number, since it uses less digits than its factorization.

17642416645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201661.

The product of its digits is 967680, while the sum is 46.

The spelling of 17642416645 in words is "seventeen billion, six hundred forty-two million, four hundred sixteen thousand, six hundred forty-five".