71633595940 has 96 divisors (see below), whose sum is σ = 162204577920. Its totient is φ = 26485595136.

The previous prime is 71633595937. The next prime is 71633595947. The reversal of 71633595940 is 4959533617.

It is not an unprimeable number, because it can be changed into a prime (71633595947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20864464 + ... + 20867896.

It is an arithmetic number, because the mean of its divisors is an integer number (1689631020).

Almost surely, 2^71633595940 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 71633595940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81102288960).

71633595940 is an abundant number, since it is smaller than the sum of its proper divisors (90570981980).

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

71633595940 is a wasteful number, since it uses less digits than its factorization.

71633595940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781 (or 4779 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 52.

The spelling of 71633595940 in words is "seventy-one billion, six hundred thirty-three million, five hundred ninety-five thousand, nine hundred forty".