71124555977986 has 16 divisors (see below), whose sum is σ = 122114529728064. Its totient is φ = 30435272691984.

The previous prime is 71124555977933. The next prime is 71124555977999. The reversal of 71124555977986 is 68977955542117.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3889979700 + ... + 3889997983.

It is an arithmetic number, because the mean of its divisors is an integer number (7632158108004).

Almost surely, 2^{71124555977986} is an apocalyptic number.

71124555977986 is a deficient number, since it is larger than the sum of its proper divisors (50989973750078).

71124555977986 is a wasteful number, since it uses less digits than its factorization.

71124555977986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7779978345.

The product of its digits is 1333584000, while the sum is 76.

The spelling of 71124555977986 in words is "seventy-one trillion, one hundred twenty-four billion, five hundred fifty-five million, nine hundred seventy-seven thousand, nine hundred eighty-six".