71203773536 has 96 divisors (see below), whose sum is σ = 164081998080. Its totient is φ = 29785766400.

The previous prime is 71203773503. The next prime is 71203773587. The reversal of 71203773536 is 63537730217.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1770095 + ... + 1809873.

It is an arithmetic number, because the mean of its divisors is an integer number (1709187480).

Almost surely, 2^71203773536 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 71203773536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82040999040).

71203773536 is an abundant number, since it is smaller than the sum of its proper divisors (92878224544).

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

71203773536 is a wasteful number, since it uses less digits than its factorization.

71203773536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39988 (or 39980 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 44.

The spelling of 71203773536 in words is "seventy-one billion, two hundred three million, seven hundred seventy-three thousand, five hundred thirty-six".