7071717876661 has 16 divisors (see below), whose sum is σ = 7637912533440. Its totient is φ = 6525456266880.

The previous prime is 7071717876659. The next prime is 7071717876689. The reversal of 7071717876661 is 1666787171707.

It is a cyclic number.

It is not a de Polignac number, because 7071717876661 - 2¹ = 7071717876659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7071717876593 and 7071717876602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7071717876631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6926995 + ... + 7882048.

It is an arithmetic number, because the mean of its divisors is an integer number (477369533340).

Almost surely, 2^{7071717876661} is an apocalyptic number.

It is an amenable number.

7071717876661 is a deficient number, since it is larger than the sum of its proper divisors (566194656779).

7071717876661 is a wasteful number, since it uses less digits than its factorization.

7071717876661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14809716.

The product of its (nonzero) digits is 29042496, while the sum is 64.

The spelling of 7071717876661 in words is "seven trillion, seventy-one billion, seven hundred seventeen million, eight hundred seventy-six thousand, six hundred sixty-one".