16161607577 has 32 divisors (see below), whose sum is σ = 17547425280. Its totient is φ = 14852597760.

The previous prime is 16161607559. The next prime is 16161607589. The reversal of 16161607577 is 77570616161.

It is a cyclic number.

It is not a de Polignac number, because 16161607577 - 2¹⁰ = 16161606553 is a prime.

It is a super-2 number, since 2×16161607577² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16161607877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18344177 + ... + 18345057.

It is an arithmetic number, because the mean of its divisors is an integer number (548357040).

Almost surely, 2^16161607577 is an apocalyptic number.

It is an amenable number.

16161607577 is a deficient number, since it is larger than the sum of its proper divisors (1385817703).

16161607577 is a wasteful number, since it uses less digits than its factorization.

16161607577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313.

The product of its (nonzero) digits is 370440, while the sum is 47.

The spelling of 16161607577 in words is "sixteen billion, one hundred sixty-one million, six hundred seven thousand, five hundred seventy-seven".