21160313236161 has 64 divisors (see below), whose sum is σ = 34748306380800. Its totient is φ = 12618959572800.

The previous prime is 21160313236159. The next prime is 21160313236247. The reversal of 21160313236161 is 16163231306112.

21160313236161 is a `hidden beast` number, since 2 + 1 + 1 + 6 + 0 + 3 + 1 + 32 + 3 + 616 + 1 = 666.

It is not a de Polignac number, because 21160313236161 - 2¹ = 21160313236159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21160313236151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9747550 + ... + 11719016.

It is an arithmetic number, because the mean of its divisors is an integer number (542942287200).

Almost surely, 2^{21160313236161} is an apocalyptic number.

It is an amenable number.

21160313236161 is a deficient number, since it is larger than the sum of its proper divisors (13587993144639).

21160313236161 is a wasteful number, since it uses less digits than its factorization.

21160313236161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972067 (or 1972061 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 21160313236161 in words is "twenty-one trillion, one hundred sixty billion, three hundred thirteen million, two hundred thirty-six thousand, one hundred sixty-one".