9999100051 has 2 divisors, whose sum is σ = 9999100052. Its totient is φ = 9999100050.

The previous prime is 9999100009. The next prime is 9999100057. The reversal of 9999100051 is 1500019999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9999100051 - 2¹¹ = 9999098003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9999099980 and 9999100007.

It is not a weakly prime, because it can be changed into another prime (9999100057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999550025 + 4999550026.

It is an arithmetic number, because the mean of its divisors is an integer number (4999550026).

Almost surely, 2^9999100051 is an apocalyptic number.

9999100051 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999100051 is an equidigital number, since it uses as much as digits as its factorization.

9999100051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32805, while the sum is 43.

The square root of 9999100051 is about 99995.5001537569. The cubic root of 9999100051 is about 2154.3700587149.

The spelling of 9999100051 in words is "nine billion, nine hundred ninety-nine million, one hundred thousand, fifty-one".