9999761201 has 2 divisors, whose sum is σ = 9999761202. Its totient is φ = 9999761200.

The previous prime is 9999761111. The next prime is 9999761207. The reversal of 9999761201 is 1021679999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9249822976 + 749938225 = 96176^2 + 27385^2 .

It is a cyclic number.

It is not a de Polignac number, because 9999761201 - 2²² = 9995566897 is a prime.

It is not a weakly prime, because it can be changed into another prime (9999761207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999880600 + 4999880601.

It is an arithmetic number, because the mean of its divisors is an integer number (4999880601).

Almost surely, 2^9999761201 is an apocalyptic number.

It is an amenable number.

9999761201 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999761201 is an equidigital number, since it uses as much as digits as its factorization.

9999761201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 551124, while the sum is 53.

The square root of 9999761201 is about 99998.8059978718. The cubic root of 9999761201 is about 2154.4175406671.

The spelling of 9999761201 in words is "nine billion, nine hundred ninety-nine million, seven hundred sixty-one thousand, two hundred one".