71555256102752 has 96 divisors (see below), whose sum is σ = 149316525695232. Its totient is φ = 33683481874944.

The previous prime is 71555256102677. The next prime is 71555256102773. The reversal of 71555256102752 is 25720165255517.

It is a junction number, because it is equal to n+sod(n) for n = 71555256102694 and 71555256102703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59217323 + ... + 60413589.

It is an arithmetic number, because the mean of its divisors is an integer number (1555380475992).

Almost surely, 2^{71555256102752} 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 71555256102752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74658262847616).

71555256102752 is an abundant number, since it is smaller than the sum of its proper divisors (77761269592480).

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

71555256102752 is a wasteful number, since it uses less digits than its factorization.

71555256102752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197580 (or 1197572 counting only the distinct ones).

The product of its (nonzero) digits is 7350000, while the sum is 53.

The spelling of 71555256102752 in words is "seventy-one trillion, five hundred fifty-five billion, two hundred fifty-six million, one hundred two thousand, seven hundred fifty-two".