71234434080 has 144 divisors (see below), whose sum is σ = 243234351360. Its totient is φ = 18984374784.

The previous prime is 71234434067. The next prime is 71234434087. The reversal of 71234434080 is 8043443217.

71234434080 is a `hidden beast` number, since 7 + 1 + 234 + 4 + 340 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (71234434087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2518899 + ... + 2547021.

It is an arithmetic number, because the mean of its divisors is an integer number (1689127440).

Almost surely, 2^71234434080 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 71234434080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121617175680).

71234434080 is an abundant number, since it is smaller than the sum of its proper divisors (171999917280).

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

71234434080 is a wasteful number, since it uses less digits than its factorization.

71234434080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29903 (or 29892 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

Adding to 71234434080 its reverse (8043443217), we get a palindrome (79277877297).

The spelling of 71234434080 in words is "seventy-one billion, two hundred thirty-four million, four hundred thirty-four thousand, eighty".