71544036044 has 48 divisors (see below), whose sum is σ = 135417434880. Its totient is φ = 32877472320.

The previous prime is 71544036041. The next prime is 71544036101. The reversal of 71544036044 is 44063044517.

It is a junction number, because it is equal to n+sod(n) for n = 71544035989 and 71544036007.

It is not an unprimeable number, because it can be changed into a prime (71544036041) 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, 15815567 + ... + 15820089.

It is an arithmetic number, because the mean of its divisors is an integer number (2821196560).

Almost surely, 2^71544036044 is an apocalyptic number.

It is an amenable number.

71544036044 is a deficient number, since it is larger than the sum of its proper divisors (63873398836).

71544036044 is a wasteful number, since it uses less digits than its factorization.

71544036044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5790 (or 5788 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 71544036044 in words is "seventy-one billion, five hundred forty-four million, thirty-six thousand, forty-four".