71712778333 has 8 divisors (see below), whose sum is σ = 83863448768. Its totient is φ = 60038604864.

The previous prime is 71712778331. The next prime is 71712778339. The reversal of 71712778333 is 33387721717.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71712778333 - 2¹ = 71712778331 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71712778331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119123916 + ... + 119124517.

It is an arithmetic number, because the mean of its divisors is an integer number (10482931096).

Almost surely, 2^71712778333 is an apocalyptic number.

It is an amenable number.

71712778333 is a deficient number, since it is larger than the sum of its proper divisors (12150670435).

71712778333 is a wasteful number, since it uses less digits than its factorization.

71712778333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238248483.

The product of its digits is 1037232, while the sum is 49.

The spelling of 71712778333 in words is "seventy-one billion, seven hundred twelve million, seven hundred seventy-eight thousand, three hundred thirty-three".