71997955748 has 12 divisors (see below), whose sum is σ = 132627813360. Its totient is φ = 34104294792.

The previous prime is 71997955693. The next prime is 71997955751. The reversal of 71997955748 is 84755979917.

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 3 ways as a sum of consecutive naturals, for example, 473670686 + ... + 473670837.

It is an arithmetic number, because the mean of its divisors is an integer number (11052317780).

Almost surely, 2^71997955748 is an apocalyptic number.

It is an amenable number.

71997955748 is a deficient number, since it is larger than the sum of its proper divisors (60629857612).

71997955748 is a wasteful number, since it uses less digits than its factorization.

71997955748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947341546 (or 947341544 counting only the distinct ones).

The product of its digits is 200037600, while the sum is 71.

The spelling of 71997955748 in words is "seventy-one billion, nine hundred ninety-seven million, nine hundred fifty-five thousand, seven hundred forty-eight".