71646341536 has 96 divisors (see below), whose sum is σ = 176267968128. Its totient is φ = 27849277440.

The previous prime is 71646341479. The next prime is 71646341603. The reversal of 71646341536 is 63514364617.

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, 1033336 + ... + 1100488.

It is an arithmetic number, because the mean of its divisors is an integer number (1836124668).

Almost surely, 2^71646341536 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 71646341536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88133984064).

71646341536 is an abundant number, since it is smaller than the sum of its proper divisors (104621626592).

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

71646341536 is a wasteful number, since it uses less digits than its factorization.

71646341536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67614 (or 67606 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 46.

The spelling of 71646341536 in words is "seventy-one billion, six hundred forty-six million, three hundred forty-one thousand, five hundred thirty-six".