9961200971 has 2 divisors, whose sum is σ = 9961200972. Its totient is φ = 9961200970.

The previous prime is 9961200959. The next prime is 9961201027. The reversal of 9961200971 is 1790021699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9961200971 - 2¹⁰ = 9961199947 is a prime.

It is not a weakly prime, because it can be changed into another prime (9961202971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4980600485 + 4980600486.

It is an arithmetic number, because the mean of its divisors is an integer number (4980600486).

Almost surely, 2^9961200971 is an apocalyptic number.

9961200971 is a deficient number, since it is larger than the sum of its proper divisors (1).

9961200971 is an equidigital number, since it uses as much as digits as its factorization.

9961200971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 44.

The square root of 9961200971 is about 99805.8163184892. The cubic root of 9961200971 is about 2151.6447462105.

The spelling of 9961200971 in words is "nine billion, nine hundred sixty-one million, two hundred thousand, nine hundred seventy-one".