71765013912 has 64 divisors (see below), whose sum is σ = 182557584000. Its totient is φ = 23502795264.

The previous prime is 71765013911. The next prime is 71765013949. The reversal of 71765013912 is 21931056717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71765013911) 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 15 ways as a sum of consecutive naturals, for example, 2638639 + ... + 2665697.

It is an arithmetic number, because the mean of its divisors is an integer number (2852462250).

Almost surely, 2^71765013912 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 71765013912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91278792000).

71765013912 is an abundant number, since it is smaller than the sum of its proper divisors (110792570088).

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

71765013912 is a wasteful number, since it uses less digits than its factorization.

71765013912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29000 (or 28996 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 42.

The spelling of 71765013912 in words is "seventy-one billion, seven hundred sixty-five million, thirteen thousand, nine hundred twelve".