71181016890 has 64 divisors (see below), whose sum is σ = 179860262400. Its totient is φ = 17979119424.

The previous prime is 71181016889. The next prime is 71181016919. The reversal of 71181016890 is 9861018117.

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 31 ways as a sum of consecutive naturals, for example, 4348341 + ... + 4364679.

It is an arithmetic number, because the mean of its divisors is an integer number (2810316600).

Almost surely, 2^71181016890 is an apocalyptic number.

71181016890 is an abundant number, since it is smaller than the sum of its proper divisors (108679245510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71181016890 is a wasteful number, since it uses less digits than its factorization.

71181016890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24011.

The product of its (nonzero) digits is 24192, while the sum is 42.

The spelling of 71181016890 in words is "seventy-one billion, one hundred eighty-one million, sixteen thousand, eight hundred ninety".