9947266052865 has 16 divisors (see below), whose sum is σ = 15916077106368. Its totient is φ = 5305058087616.

The previous prime is 9947266052827. The next prime is 9947266052879. The reversal of 9947266052865 is 5682506627499.

It is not a de Polignac number, because 9947266052865 - 2¹³ = 9947266044673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9947266052865.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8857114 + ... + 9916803.

It is an arithmetic number, because the mean of its divisors is an integer number (994754819148).

Almost surely, 2^{9947266052865} is an apocalyptic number.

It is an amenable number.

9947266052865 is a deficient number, since it is larger than the sum of its proper divisors (5968811053503).

9947266052865 is a wasteful number, since it uses less digits than its factorization.

9947266052865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18809248.

The product of its (nonzero) digits is 391910400, while the sum is 69.

The spelling of 9947266052865 in words is "nine trillion, nine hundred forty-seven billion, two hundred sixty-six million, fifty-two thousand, eight hundred sixty-five".