71838388308 has 12 divisors (see below), whose sum is σ = 167622906080. Its totient is φ = 23946129432.

The previous prime is 71838388289. The next prime is 71838388319. The reversal of 71838388308 is 80388383817.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×71838388308² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2993266168 + ... + 2993266191.

Almost surely, 2^71838388308 is an apocalyptic number.

It is an amenable number.

71838388308 is an abundant number, since it is smaller than the sum of its proper divisors (95784517772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71838388308 is a wasteful number, since it uses less digits than its factorization.

71838388308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5986532366 (or 5986532364 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 71838388308 in words is "seventy-one billion, eight hundred thirty-eight million, three hundred eighty-eight thousand, three hundred eight".