161211364411 has 8 divisors (see below), whose sum is σ = 172767056544. Its totient is φ = 150034547520.

The previous prime is 161211364399. The next prime is 161211364417. The reversal of 161211364411 is 114463112161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161211364411 - 2⁷ = 161211364283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161211364417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94717930 + ... + 94719631.

It is an arithmetic number, because the mean of its divisors is an integer number (21595882068).

Almost surely, 2^161211364411 is an apocalyptic number.

161211364411 is a deficient number, since it is larger than the sum of its proper divisors (11555692133).

161211364411 is a wasteful number, since it uses less digits than its factorization.

161211364411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189437621.

The product of its digits is 3456, while the sum is 31.

Adding to 161211364411 its reverse (114463112161), we get a palindrome (275674476572).

The spelling of 161211364411 in words is "one hundred sixty-one billion, two hundred eleven million, three hundred sixty-four thousand, four hundred eleven".