71613164409 has 4 divisors (see below), whose sum is σ = 95484219216. Its totient is φ = 47742109604.

The previous prime is 71613164383. The next prime is 71613164419. The reversal of 71613164409 is 90446131617.

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.

It is a cyclic number.

It is not a de Polignac number, because 71613164409 - 2⁸ = 71613164153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71613164419) 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 3 ways as a sum of consecutive naturals, for example, 11935527399 + ... + 11935527404.

It is an arithmetic number, because the mean of its divisors is an integer number (23871054804).

Almost surely, 2^71613164409 is an apocalyptic number.

It is an amenable number.

71613164409 is a deficient number, since it is larger than the sum of its proper divisors (23871054807).

71613164409 is a wasteful number, since it uses less digits than its factorization.

71613164409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23871054806.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 71613164409 in words is "seventy-one billion, six hundred thirteen million, one hundred sixty-four thousand, four hundred nine".