71124134672 has 80 divisors (see below), whose sum is σ = 148509244800. Its totient is φ = 32930042880.

The previous prime is 71124134657. The next prime is 71124134687. The reversal of 71124134672 is 27643142117.

It is an interprime number because it is at equal distance from previous prime (71124134657) and next prime (71124134687).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090733 + ... + 1154099.

It is an arithmetic number, because the mean of its divisors is an integer number (1856365560).

Almost surely, 2^71124134672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71124134672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74254622400).

71124134672 is an abundant number, since it is smaller than the sum of its proper divisors (77385110128).

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

71124134672 is a wasteful number, since it uses less digits than its factorization.

71124134672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63504 (or 63498 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

Adding to 71124134672 its reverse (27643142117), we get a palindrome (98767276789).

The spelling of 71124134672 in words is "seventy-one billion, one hundred twenty-four million, one hundred thirty-four thousand, six hundred seventy-two".