71442939986908 has 96 divisors (see below), whose sum is σ = 146661921036288. Its totient is φ = 29812273075200.

The previous prime is 71442939986893. The next prime is 71442939986921. The reversal of 71442939986908 is 80968993924417.

It is a super-2 number, since 2×71442939986908² (a number of 29 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 (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1370687088 + ... + 1370739208.

It is an arithmetic number, because the mean of its divisors is an integer number (1527728344128).

Almost surely, 2^{71442939986908} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71442939986908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73330960518144).

71442939986908 is an abundant number, since it is smaller than the sum of its proper divisors (75218981049380).

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

71442939986908 is a wasteful number, since it uses less digits than its factorization.

71442939986908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54523 (or 54521 counting only the distinct ones).

The product of its (nonzero) digits is 1693052928, while the sum is 79.

The spelling of 71442939986908 in words is "seventy-one trillion, four hundred forty-two billion, nine hundred thirty-nine million, nine hundred eighty-six thousand, nine hundred eight".