71212373766 has 48 divisors (see below), whose sum is σ = 155458686240. Its totient is φ = 23558872320.

The previous prime is 71212373731. The next prime is 71212373779. The reversal of 71212373766 is 66737321217.

71212373766 is a `hidden beast` number, since 7 + 1 + 212 + 373 + 7 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1245486 + ... + 1301406.

It is an arithmetic number, because the mean of its divisors is an integer number (3238722630).

Almost surely, 2^71212373766 is an apocalyptic number.

71212373766 is an abundant number, since it is smaller than the sum of its proper divisors (84246312474).

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

71212373766 is a wasteful number, since it uses less digits than its factorization.

71212373766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56461 (or 56458 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The spelling of 71212373766 in words is "seventy-one billion, two hundred twelve million, three hundred seventy-three thousand, seven hundred sixty-six".