71873439239680 has 240 divisors, whose sum is σ = 197580171921264. Its totient is φ = 24976830627840.

The previous prime is 71873439239587. The next prime is 71873439239681. The reversal of 71873439239680 is 8693293437817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71873439239681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2468775 + ... + 12240985.

Almost surely, 2^{71873439239680} 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 71873439239680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98790085960632).

71873439239680 is an abundant number, since it is smaller than the sum of its proper divisors (125706732681584).

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

71873439239680 is a wasteful number, since it uses less digits than its factorization.

71873439239680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9772277 (or 9772248 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 70.

The spelling of 71873439239680 in words is "seventy-one trillion, eight hundred seventy-three billion, four hundred thirty-nine million, two hundred thirty-nine thousand, six hundred eighty".