71162806121 has 16 divisors (see below), whose sum is σ = 80147558400. Its totient is φ = 62597869200.

The previous prime is 71162806103. The next prime is 71162806147. The reversal of 71162806121 is 12160826117.

It is a cyclic number.

It is not a de Polignac number, because 71162806121 - 2²² = 71158611817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71162806171) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4479290 + ... + 4495148.

It is an arithmetic number, because the mean of its divisors is an integer number (5009222400).

Almost surely, 2^71162806121 is an apocalyptic number.

It is an amenable number.

71162806121 is a deficient number, since it is larger than the sum of its proper divisors (8984752279).

71162806121 is a wasteful number, since it uses less digits than its factorization.

71162806121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29060.

The product of its (nonzero) digits is 8064, while the sum is 35.

The spelling of 71162806121 in words is "seventy-one billion, one hundred sixty-two million, eight hundred six thousand, one hundred twenty-one".