9670720917771 has 6 divisors (see below), whose sum is σ = 13968819103460. Its totient is φ = 6447147278508.

The previous prime is 9670720917761. The next prime is 9670720917779. The reversal of 9670720917771 is 1777190270769.

It is not a de Polignac number, because 9670720917771 - 2¹⁸ = 9670720655627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9670720917699 and 9670720917708.

It is not an unprimeable number, because it can be changed into a prime (9670720917779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 537262273201 + ... + 537262273218.

Almost surely, 2^{9670720917771} is an apocalyptic number.

9670720917771 is a deficient number, since it is larger than the sum of its proper divisors (4298098185689).

9670720917771 is a wasteful number, since it uses less digits than its factorization.

9670720917771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074524546425 (or 1074524546422 counting only the distinct ones).

The product of its (nonzero) digits is 16336404, while the sum is 63.

The spelling of 9670720917771 in words is "nine trillion, six hundred seventy billion, seven hundred twenty million, nine hundred seventeen thousand, seven hundred seventy-one".