71431919384 has 64 divisors (see below), whose sum is σ = 161368104960. Its totient is φ = 28995765120.

The previous prime is 71431919311. The next prime is 71431919389. The reversal of 71431919384 is 48391913417.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71431919389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356147 + ... + 519330.

It is an arithmetic number, because the mean of its divisors is an integer number (2521376640).

Almost surely, 2^71431919384 is an apocalyptic number.

It is an amenable number.

71431919384 is an abundant number, since it is smaller than the sum of its proper divisors (89936185576).

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

71431919384 is a wasteful number, since it uses less digits than its factorization.

71431919384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875568 (or 875564 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The spelling of 71431919384 in words is "seventy-one billion, four hundred thirty-one million, nine hundred nineteen thousand, three hundred eighty-four".