71645198084 has 24 divisors (see below), whose sum is σ = 127459347288. Its totient is φ = 35228471040.

The previous prime is 71645198029. The next prime is 71645198101. The reversal of 71645198084 is 48089154617.

It can be written as a sum of positive squares in 4 ways, for example, as 850888900 + 70794309184 = 29170^2 + 266072^2 .

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 7 ways as a sum of consecutive naturals, for example, 1363304 + ... + 1414880.

It is an arithmetic number, because the mean of its divisors is an integer number (5310806137).

Almost surely, 2^71645198084 is an apocalyptic number.

It is an amenable number.

71645198084 is a deficient number, since it is larger than the sum of its proper divisors (55814149204).

71645198084 is a wasteful number, since it uses less digits than its factorization.

71645198084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57335 (or 57333 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 71645198084 in words is "seventy-one billion, six hundred forty-five million, one hundred ninety-eight thousand, eighty-four".