71541823608 has 24 divisors (see below), whose sum is σ = 193759105800. Its totient is φ = 23847274512.

The previous prime is 71541823601. The next prime is 71541823643. The reversal of 71541823608 is 80632814517.

71541823608 is a `hidden beast` number, since 7 + 1 + 5 + 4 + 18 + 23 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×71541823608² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71541823601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 496818148 + ... + 496818291.

It is an arithmetic number, because the mean of its divisors is an integer number (8073296075).

Almost surely, 2^71541823608 is an apocalyptic number.

It is an amenable number.

71541823608 is an abundant number, since it is smaller than the sum of its proper divisors (122217282192).

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

71541823608 is a wasteful number, since it uses less digits than its factorization.

71541823608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993636451 (or 993636444 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

Subtracting 71541823608 from its reverse (80632814517), we obtain a palindrome (9090990909).

The spelling of 71541823608 in words is "seventy-one billion, five hundred forty-one million, eight hundred twenty-three thousand, six hundred eight".