71115342064 has 80 divisors (see below), whose sum is σ = 154484126272. Its totient is φ = 31497652224.

The previous prime is 71115342059. The next prime is 71115342097. The reversal of 71115342064 is 46024351117.

It is a congruent number.

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, 498517 + ... + 625099.

Almost surely, 2^71115342064 is an apocalyptic number.

71115342064 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71115342064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77242063136).

71115342064 is an abundant number, since it is smaller than the sum of its proper divisors (83368784208).

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

71115342064 is a wasteful number, since it uses less digits than its factorization.

71115342064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126714 (or 126708 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 71115342064 in words is "seventy-one billion, one hundred fifteen million, three hundred forty-two thousand, sixty-four".