61716871716 has 24 divisors (see below), whose sum is σ = 144216896544. Its totient is φ = 20542167360.

The previous prime is 61716871709. The next prime is 61716871751. The reversal of 61716871716 is 61717861716.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3756865 + ... + 3773256.

It is an arithmetic number, because the mean of its divisors is an integer number (6009037356).

Almost surely, 2^61716871716 is an apocalyptic number.

It is an amenable number.

61716871716 is an abundant number, since it is smaller than the sum of its proper divisors (82500024828).

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

61716871716 is a wasteful number, since it uses less digits than its factorization.

61716871716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7530811 (or 7530809 counting only the distinct ones).

The product of its digits is 592704, while the sum is 51.

The spelling of 61716871716 in words is "sixty-one billion, seven hundred sixteen million, eight hundred seventy-one thousand, seven hundred sixteen".