999999951110761 has 2 divisors, whose sum is σ = 999999951110762. Its totient is φ = 999999951110760.

The previous prime is 999999951110717. The next prime is 999999951110819. The reversal of 999999951110761 is 167011159999999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 997178357453161 + 2821593657600 = 31578131^2 + 1679760^2 .

It is a cyclic number.

It is not a de Polignac number, because 999999951110761 - 2²¹ = 999999949013609 is a prime.

It is not a weakly prime, because it can be changed into another prime (999999951110261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999975555380 + 499999975555381.

It is an arithmetic number, because the mean of its divisors is an integer number (499999975555381).

Almost surely, 2^{999999951110761} is an apocalyptic number.

It is an amenable number.

999999951110761 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999951110761 is an equidigital number, since it uses as much as digits as its factorization.

999999951110761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1004423490, while the sum is 85.

The spelling of 999999951110761 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred fifty-one million, one hundred ten thousand, seven hundred sixty-one".