71525580680 has 32 divisors (see below), whose sum is σ = 161775152640. Its totient is φ = 28460437440.

The previous prime is 71525580647. The next prime is 71525580689. The reversal of 71525580680 is 8608552517.

It is a happy number.

It is a super-2 number, since 2×71525580680² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71525580689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4673354 + ... + 4688633.

It is an arithmetic number, because the mean of its divisors is an integer number (5055473520).

Almost surely, 2^71525580680 is an apocalyptic number.

It is an amenable number.

71525580680 is an abundant number, since it is smaller than the sum of its proper divisors (90249571960).

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

71525580680 is a wasteful number, since it uses less digits than its factorization.

71525580680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9362189 (or 9362185 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 71525580680 in words is "seventy-one billion, five hundred twenty-five million, five hundred eighty thousand, six hundred eighty".