71914218433 has 4 divisors (see below), whose sum is σ = 72030773700. Its totient is φ = 71797663168.

The previous prime is 71914218421. The next prime is 71914218437. The reversal of 71914218433 is 33481241917.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25194260529 + 46719957904 = 158727^2 + 216148^2 .

It is a cyclic number.

It is not a de Polignac number, because 71914218433 - 2⁵ = 71914218401 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 71914218433.

It is not an unprimeable number, because it can be changed into a prime (71914218437) 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, 58276708 + ... + 58277941.

It is an arithmetic number, because the mean of its divisors is an integer number (18007693425).

Almost surely, 2^71914218433 is an apocalyptic number.

It is an amenable number.

71914218433 is a deficient number, since it is larger than the sum of its proper divisors (116555267).

71914218433 is a wasteful number, since it uses less digits than its factorization.

71914218433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116555266.

The product of its digits is 145152, while the sum is 43.

The spelling of 71914218433 in words is "seventy-one billion, nine hundred fourteen million, two hundred eighteen thousand, four hundred thirty-three".