71638042548 has 24 divisors (see below), whose sum is σ = 175953087520. Its totient is φ = 22622539680.

The previous prime is 71638042543. The next prime is 71638042559. The reversal of 71638042548 is 84524083617.

It is a junction number, because it is equal to n+sod(n) for n = 71638042497 and 71638042506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71638042543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157100743 + ... + 157101198.

Almost surely, 2^71638042548 is an apocalyptic number.

It is an amenable number.

71638042548 is an abundant number, since it is smaller than the sum of its proper divisors (104315044972).

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

71638042548 is a wasteful number, since it uses less digits than its factorization.

71638042548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314201967 (or 314201965 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 71638042548 in words is "seventy-one billion, six hundred thirty-eight million, forty-two thousand, five hundred forty-eight".