71144084784 has 40 divisors (see below), whose sum is σ = 186003220032. Its totient is φ = 23428974400.

The previous prime is 71144084783. The next prime is 71144084789. The reversal of 71144084784 is 48748044117.

It is a super-2 number, since 2×71144084784² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (71144084783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8924742 + ... + 8932709.

Almost surely, 2^71144084784 is an apocalyptic number.

It is an amenable number.

71144084784 is an abundant number, since it is smaller than the sum of its proper divisors (114859135248).

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

71144084784 is a wasteful number, since it uses less digits than its factorization.

71144084784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17857545 (or 17857539 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 48.

The spelling of 71144084784 in words is "seventy-one billion, one hundred forty-four million, eighty-four thousand, seven hundred eighty-four".