7161664445 has 32 divisors (see below), whose sum is σ = 9675590400. Its totient is φ = 5049183744.

The previous prime is 7161664427. The next prime is 7161664457. The reversal of 7161664445 is 5444661617.

It is not a de Polignac number, because 7161664445 - 2⁸ = 7161664189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7161664396 and 7161664405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 846446 + ... + 854864.

It is an arithmetic number, because the mean of its divisors is an integer number (302362200).

Almost surely, 2^7161664445 is an apocalyptic number.

It is an amenable number.

7161664445 is a deficient number, since it is larger than the sum of its proper divisors (2513925955).

7161664445 is a wasteful number, since it uses less digits than its factorization.

7161664445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9029.

The product of its digits is 483840, while the sum is 44.

The square root of 7161664445 is about 84626.6178279624. The cubic root of 7161664445 is about 1927.5455788312.

The spelling of 7161664445 in words is "seven billion, one hundred sixty-one million, six hundred sixty-four thousand, four hundred forty-five".