71044704252 has 72 divisors (see below), whose sum is σ = 186069396240. Its totient is φ = 22829076480.

The previous prime is 71044704251. The next prime is 71044704257. The reversal of 71044704252 is 25240744017.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71044704251) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 616123 + ... + 722285.

It is an arithmetic number, because the mean of its divisors is an integer number (2584297170).

Almost surely, 2^71044704252 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 71044704252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93034698120).

71044704252 is an abundant number, since it is smaller than the sum of its proper divisors (115024691988).

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

71044704252 is a wasteful number, since it uses less digits than its factorization.

71044704252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106843 (or 106838 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 36.

The spelling of 71044704252 in words is "seventy-one billion, forty-four million, seven hundred four thousand, two hundred fifty-two".