71989337080 has 64 divisors (see below), whose sum is σ = 167245689600. Its totient is φ = 27859399680.

The previous prime is 71989337053. The next prime is 71989337093. The reversal of 71989337080 is 8073398917.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

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, 7843374 + ... + 7852546.

It is an arithmetic number, because the mean of its divisors is an integer number (2613213900).

Almost surely, 2^71989337080 is an apocalyptic number.

It is an amenable number.

71989337080 is an abundant number, since it is smaller than the sum of its proper divisors (95256352520).

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

71989337080 is a wasteful number, since it uses less digits than its factorization.

71989337080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15544 (or 15540 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 55.

The spelling of 71989337080 in words is "seventy-one billion, nine hundred eighty-nine million, three hundred thirty-seven thousand, eighty".