999992999501 has 2 divisors, whose sum is σ = 999992999502. Its totient is φ = 999992999500.

The previous prime is 999992999461. The next prime is 999992999507. The reversal of 999992999501 is 105999299999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783233850025 + 216759149476 = 885005^2 + 465574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999992999501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999992999507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499996499750 + 499996499751.

It is an arithmetic number, because the mean of its divisors is an integer number (499996499751).

Almost surely, 2^999992999501 is an apocalyptic number.

It is an amenable number.

999992999501 is a deficient number, since it is larger than the sum of its proper divisors (1).

999992999501 is an equidigital number, since it uses as much as digits as its factorization.

999992999501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430467210, while the sum is 80.

The spelling of 999992999501 in words is "nine hundred ninety-nine billion, nine hundred ninety-two million, nine hundred ninety-nine thousand, five hundred one".