71418147861 has 4 divisors (see below), whose sum is σ = 95224197152. Its totient is φ = 47612098572.

The previous prime is 71418147847. The next prime is 71418147893. The reversal of 71418147861 is 16874181417.

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 not a de Polignac number, because 71418147861 - 2¹⁹ = 71417623573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71418147861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71418147841) 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, 11903024641 + ... + 11903024646.

It is an arithmetic number, because the mean of its divisors is an integer number (23806049288).

Almost surely, 2^71418147861 is an apocalyptic number.

It is an amenable number.

71418147861 is a deficient number, since it is larger than the sum of its proper divisors (23806049291).

71418147861 is a wasteful number, since it uses less digits than its factorization.

71418147861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23806049290.

The product of its digits is 301056, while the sum is 48.

The spelling of 71418147861 in words is "seventy-one billion, four hundred eighteen million, one hundred forty-seven thousand, eight hundred sixty-one".