999651291007099 has 2 divisors, whose sum is σ = 999651291007100. Its totient is φ = 999651291007098.

The previous prime is 999651291007067. The next prime is 999651291007153. The reversal of 999651291007099 is 990700192156999.

999651291007099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999651291007099 - 2⁵ = 999651291007067 is a prime.

It is a super-2 number, since 2×999651291007099² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999651291007049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499825645503549 + 499825645503550.

It is an arithmetic number, because the mean of its divisors is an integer number (499825645503550).

Almost surely, 2^{999651291007099} is an apocalyptic number.

999651291007099 is a deficient number, since it is larger than the sum of its proper divisors (1).

999651291007099 is an equidigital number, since it uses as much as digits as its factorization.

999651291007099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 223205220, while the sum is 76.

The spelling of 999651291007099 in words is "nine hundred ninety-nine trillion, six hundred fifty-one billion, two hundred ninety-one million, seven thousand, ninety-nine".