71520196266 has 40 divisors (see below), whose sum is σ = 160445528100. Its totient is φ = 23812201152.

The previous prime is 71520196261. The next prime is 71520196301. The reversal of 71520196266 is 66269102517.

71520196266 is a `hidden beast` number, since 7 + 1 + 5 + 2 + 0 + 19 + 626 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70581080241 + 939116025 = 265671^2 + 30645^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71520196261) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 118741 + ... + 396408.

Almost surely, 2^71520196266 is an apocalyptic number.

71520196266 is an abundant number, since it is smaller than the sum of its proper divisors (88925331834).

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

71520196266 is a wasteful number, since it uses less digits than its factorization.

71520196266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516020 (or 516011 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 71520196266 in words is "seventy-one billion, five hundred twenty million, one hundred ninety-six thousand, two hundred sixty-six".