161577005071 has 16 divisors (see below), whose sum is σ = 174038065344. Its totient is φ = 149611359744.

The previous prime is 161577005059. The next prime is 161577005077. The reversal of 161577005071 is 170500775161.

It is a happy number.

It is not a de Polignac number, because 161577005071 - 2⁵ = 161577005039 is a prime.

It is a super-2 number, since 2×161577005071² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161577005077) 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, 314250 + ... + 649543.

It is an arithmetic number, because the mean of its divisors is an integer number (10877379084).

Almost surely, 2^161577005071 is an apocalyptic number.

161577005071 is a deficient number, since it is larger than the sum of its proper divisors (12461060273).

161577005071 is a wasteful number, since it uses less digits than its factorization.

161577005071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964050.

The product of its (nonzero) digits is 51450, while the sum is 40.

The spelling of 161577005071 in words is "one hundred sixty-one billion, five hundred seventy-seven million, five thousand, seventy-one".