71537116332 has 48 divisors (see below), whose sum is σ = 185079654144. Its totient is φ = 21322536000.

The previous prime is 71537116319. The next prime is 71537116337. The reversal of 71537116332 is 23361173517.

It is a happy number.

It is a super-2 number, since 2×71537116332² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71537116337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4434144 + ... + 4450247.

It is an arithmetic number, because the mean of its divisors is an integer number (3855826128).

Almost surely, 2^71537116332 is an apocalyptic number.

It is an amenable number.

71537116332 is an abundant number, since it is smaller than the sum of its proper divisors (113542537812).

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

71537116332 is a wasteful number, since it uses less digits than its factorization.

71537116332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8884470 (or 8884468 counting only the distinct ones).

The product of its digits is 79380, while the sum is 39.

Adding to 71537116332 its reverse (23361173517), we get a palindrome (94898289849).

The spelling of 71537116332 in words is "seventy-one billion, five hundred thirty-seven million, one hundred sixteen thousand, three hundred thirty-two".