70184721161 has 4 divisors (see below), whose sum is σ = 70185295632. Its totient is φ = 70184146692.

The previous prime is 70184721157. The next prime is 70184721163. The reversal of 70184721161 is 16112748107.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 70184721161 - 2² = 70184721157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70184721163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22871 + ... + 375356.

It is an arithmetic number, because the mean of its divisors is an integer number (17546323908).

Almost surely, 2^70184721161 is an apocalyptic number.

It is an amenable number.

70184721161 is a deficient number, since it is larger than the sum of its proper divisors (574471).

70184721161 is a wasteful number, since it uses less digits than its factorization.

70184721161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574470.

The product of its (nonzero) digits is 18816, while the sum is 38.

The spelling of 70184721161 in words is "seventy billion, one hundred eighty-four million, seven hundred twenty-one thousand, one hundred sixty-one".