9720646411965 has 32 divisors (see below), whose sum is σ = 15668028720000. Its totient is φ = 5146020363264.

The previous prime is 9720646411913. The next prime is 9720646411997. The reversal of 9720646411965 is 5691146460279.

It is not a de Polignac number, because 9720646411965 - 2⁸ = 9720646411709 is a prime.

It is a super-2 number, since 2×9720646411965² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9720646411899 and 9720646411908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22259286 + ... + 22691784.

It is an arithmetic number, because the mean of its divisors is an integer number (489625897500).

Almost surely, 2^{9720646411965} is an apocalyptic number.

It is an amenable number.

9720646411965 is a deficient number, since it is larger than the sum of its proper divisors (5947382308035).

9720646411965 is a wasteful number, since it uses less digits than its factorization.

9720646411965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443581.

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 9720646411965 in words is "nine trillion, seven hundred twenty billion, six hundred forty-six million, four hundred eleven thousand, nine hundred sixty-five".