10991741648947 has 2 divisors, whose sum is σ = 10991741648948. Its totient is φ = 10991741648946.

The previous prime is 10991741648911. The next prime is 10991741648999. The reversal of 10991741648947 is 74984614719901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10991741648947 - 2¹⁹ = 10991741124659 is a prime.

It is a super-2 number, since 2×10991741648947² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10991741648747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5495870824473 + 5495870824474.

It is an arithmetic number, because the mean of its divisors is an integer number (5495870824474).

Almost surely, 2^{10991741648947} is an apocalyptic number.

10991741648947 is a deficient number, since it is larger than the sum of its proper divisors (1).

10991741648947 is an equidigital number, since it uses as much as digits as its factorization.

10991741648947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 109734912, while the sum is 70.

The spelling of 10991741648947 in words is "ten trillion, nine hundred ninety-one billion, seven hundred forty-one million, six hundred forty-eight thousand, nine hundred forty-seven".