71541323788 has 48 divisors (see below), whose sum is σ = 147976101504. Its totient is φ = 29894135040.

The previous prime is 71541323759. The next prime is 71541323803. The reversal of 71541323788 is 88732314517.

It is a happy number.

It is a super-2 number, since 2×71541323788² (a number of 23 digits) contains 22 as substring.

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, 1079970 + ... + 1144297.

It is an arithmetic number, because the mean of its divisors is an integer number (3082835448).

Almost surely, 2^71541323788 is an apocalyptic number.

It is an amenable number.

71541323788 is an abundant number, since it is smaller than the sum of its proper divisors (76434777716).

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

71541323788 is a wasteful number, since it uses less digits than its factorization.

71541323788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224342 (or 2224340 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 49.

The spelling of 71541323788 in words is "seventy-one billion, five hundred forty-one million, three hundred twenty-three thousand, seven hundred eighty-eight".