71940551280 has 160 divisors (see below), whose sum is σ = 241311221760. Its totient is φ = 17624355840.

The previous prime is 71940551279. The next prime is 71940551299. The reversal of 71940551280 is 8215504917.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 603681 + ... + 712959.

It is an arithmetic number, because the mean of its divisors is an integer number (1508195136).

Almost surely, 2^71940551280 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 71940551280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120655610880).

71940551280 is an abundant number, since it is smaller than the sum of its proper divisors (169370670480).

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

71940551280 is a wasteful number, since it uses less digits than its factorization.

71940551280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109519 (or 109513 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 71940551280 in words is "seventy-one billion, nine hundred forty million, five hundred fifty-one thousand, two hundred eighty".