71073747008 has 56 divisors (see below), whose sum is σ = 153934546080. Its totient is φ = 32290283520.

The previous prime is 71073746983. The next prime is 71073747023. The reversal of 71073747008 is 80074737017.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a self number, because there is not a number n which added to its sum of digits gives 71073747008.

It is an unprimeable number.

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, 1463663 + ... + 1511441.

It is an arithmetic number, because the mean of its divisors is an integer number (2748831180).

Almost surely, 2^71073747008 is an apocalyptic number.

It is an amenable number.

71073747008 is an abundant number, since it is smaller than the sum of its proper divisors (82860799072).

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

71073747008 is a wasteful number, since it uses less digits than its factorization.

71073747008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49915 (or 49905 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 44.

Subtracting 71073747008 from its reverse (80074737017), we obtain a palindrome (9000990009).

The spelling of 71073747008 in words is "seventy-one billion, seventy-three million, seven hundred forty-seven thousand, eight".