71544197120 has 416 divisors, whose sum is σ = 198722833920. Its totient is φ = 24479006720.

The previous prime is 71544197093. The next prime is 71544197191. The reversal of 71544197120 is 2179144517.

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, 307056524 + ... + 307056756.

It is an arithmetic number, because the mean of its divisors is an integer number (477699120).

Almost surely, 2^71544197120 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 71544197120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99361416960).

71544197120 is an abundant number, since it is smaller than the sum of its proper divisors (127178636800).

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

71544197120 is a wasteful number, since it uses less digits than its factorization.

71544197120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 71544197120 in words is "seventy-one billion, five hundred forty-four million, one hundred ninety-seven thousand, one hundred twenty".