71433823540 has 36 divisors (see below), whose sum is σ = 159354289836. Its totient is φ = 26892731392.

The previous prime is 71433823519. The next prime is 71433823547. The reversal of 71433823540 is 4532833417.

It can be written as a sum of positive squares in 6 ways, for example, as 20965302436 + 50468521104 = 144794^2 + 224652^2 .

It is a super-2 number, since 2×71433823540² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71433823493 and 71433823502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71433823547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6173617 + ... + 6185176.

It is an arithmetic number, because the mean of its divisors is an integer number (4426508051).

Almost surely, 2^71433823540 is an apocalyptic number.

It is an amenable number.

71433823540 is an abundant number, since it is smaller than the sum of its proper divisors (87920466296).

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

71433823540 is a wasteful number, since it uses less digits than its factorization.

71433823540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12358836 (or 12358817 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 71433823540 in words is "seventy-one billion, four hundred thirty-three million, eight hundred twenty-three thousand, five hundred forty".