71133557242 has 16 divisors (see below), whose sum is σ = 116637452064. Its totient is φ = 32267578000.

The previous prime is 71133557237. The next prime is 71133557263. The reversal of 71133557242 is 24275533117.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71133557195 and 71133557204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3281809 + ... + 3303412.

It is an arithmetic number, because the mean of its divisors is an integer number (7289840754).

Almost surely, 2^71133557242 is an apocalyptic number.

71133557242 is a deficient number, since it is larger than the sum of its proper divisors (45503894822).

71133557242 is a wasteful number, since it uses less digits than its factorization.

71133557242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585725.

The product of its digits is 176400, while the sum is 40.

The spelling of 71133557242 in words is "seventy-one billion, one hundred thirty-three million, five hundred fifty-seven thousand, two hundred forty-two".