71988767326 has 16 divisors (see below), whose sum is σ = 124562676096. Its totient is φ = 30563988696.

The previous prime is 71988767311. The next prime is 71988767359. The reversal of 71988767326 is 62376788917.

It is a super-2 number, since 2×71988767326² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24026796 + ... + 24029791.

It is an arithmetic number, because the mean of its divisors is an integer number (7785167256).

Almost surely, 2^71988767326 is an apocalyptic number.

71988767326 is a deficient number, since it is larger than the sum of its proper divisors (52573908770).

71988767326 is a wasteful number, since it uses less digits than its factorization.

71988767326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48056703.

The product of its digits is 42674688, while the sum is 64.

The spelling of 71988767326 in words is "seventy-one billion, nine hundred eighty-eight million, seven hundred sixty-seven thousand, three hundred twenty-six".