71324478336 has 128 divisors (see below), whose sum is σ = 190983168000. Its totient is φ = 23583909888.

The previous prime is 71324478283. The next prime is 71324478341. The reversal of 71324478336 is 63387442317.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (2032128) is a multiple of the sum of its prime divisors (3024).

It is a congruent number.

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, 29266110 + ... + 29268546.

It is an arithmetic number, because the mean of its divisors is an integer number (1492056000).

Almost surely, 2^71324478336 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 71324478336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95491584000).

71324478336 is an abundant number, since it is smaller than the sum of its proper divisors (119658689664).

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

71324478336 is a wasteful number, since it uses less digits than its factorization.

71324478336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036 (or 3024 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 48.

The spelling of 71324478336 in words is "seventy-one billion, three hundred twenty-four million, four hundred seventy-eight thousand, three hundred thirty-six".