71544019048 has 16 divisors (see below), whose sum is σ = 134438576580. Its totient is φ = 35693731968.

The previous prime is 71544019021. The next prime is 71544019049. The reversal of 71544019048 is 84091044517.

It can be written as a sum of positive squares in 2 ways, for example, as 61584378244 + 9959640804 = 248162^2 + 99798^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71544018995 and 71544019013.

It is not an unprimeable number, because it can be changed into a prime (71544019049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9780811 + ... + 9788122.

Almost surely, 2^71544019048 is an apocalyptic number.

It is an amenable number.

71544019048 is a deficient number, since it is larger than the sum of its proper divisors (62894557532).

71544019048 is a wasteful number, since it uses less digits than its factorization.

71544019048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19569396 (or 19569392 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 71544019048 in words is "seventy-one billion, five hundred forty-four million, nineteen thousand, forty-eight".