71162780075 has 12 divisors (see below), whose sum is σ = 88255480008. Its totient is φ = 56921428800.

The previous prime is 71162780069. The next prime is 71162780107. The reversal of 71162780075 is 57008726117.

It is not a de Polignac number, because 71162780075 - 2¹² = 71162775979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 52322 + ... + 380871.

It is an arithmetic number, because the mean of its divisors is an integer number (7354623334).

Almost surely, 2^71162780075 is an apocalyptic number.

71162780075 is a deficient number, since it is larger than the sum of its proper divisors (17092699933).

71162780075 is a wasteful number, since it uses less digits than its factorization.

71162780075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439774 (or 439769 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 44.

The spelling of 71162780075 in words is "seventy-one billion, one hundred sixty-two million, seven hundred eighty thousand, seventy-five".