71212170477 has 16 divisors (see below), whose sum is σ = 108522949760. Its totient is φ = 40689231552.

The previous prime is 71212170457. The next prime is 71212170481. The reversal of 71212170477 is 77407121217.

It is not a de Polignac number, because 71212170477 - 2¹⁴ = 71212154093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71212170427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122799 + ... + 396867.

It is an arithmetic number, because the mean of its divisors is an integer number (6782684360).

Almost surely, 2^71212170477 is an apocalyptic number.

It is an amenable number.

71212170477 is a deficient number, since it is larger than the sum of its proper divisors (37310779283).

71212170477 is a wasteful number, since it uses less digits than its factorization.

71212170477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286452.

The product of its (nonzero) digits is 38416, while the sum is 39.

The spelling of 71212170477 in words is "seventy-one billion, two hundred twelve million, one hundred seventy thousand, four hundred seventy-seven".