71994449480 has 32 divisors (see below), whose sum is σ = 161997494400. Its totient is φ = 28796005056.

The previous prime is 71994449473. The next prime is 71994449491. The reversal of 71994449480 is 8494449917.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743969 + ... + 835151.

It is an arithmetic number, because the mean of its divisors is an integer number (5062421700).

Almost surely, 2^71994449480 is an apocalyptic number.

It is an amenable number.

71994449480 is an abundant number, since it is smaller than the sum of its proper divisors (90003044920).

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

71994449480 is a wasteful number, since it uses less digits than its factorization.

71994449480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110933 (or 110929 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 71994449480 in words is "seventy-one billion, nine hundred ninety-four million, four hundred forty-nine thousand, four hundred eighty".