71813534604 has 96 divisors (see below), whose sum is σ = 201776601600. Its totient is φ = 19419471360.

The previous prime is 71813534587. The next prime is 71813534633. The reversal of 71813534604 is 40643531817.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1672152 + ... + 1714560.

It is an arithmetic number, because the mean of its divisors is an integer number (2101839600).

Almost surely, 2^71813534604 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 71813534604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100888300800).

71813534604 is an abundant number, since it is smaller than the sum of its proper divisors (129963066996).

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

71813534604 is a wasteful number, since it uses less digits than its factorization.

71813534604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43503 (or 43501 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 71813534604 in words is "seventy-one billion, eight hundred thirteen million, five hundred thirty-four thousand, six hundred four".