210309999999 has 8 divisors (see below), whose sum is σ = 305905454592. Its totient is φ = 127460606040.

The previous prime is 210309999983. The next prime is 210310000009. The reversal of 210309999999 is 999999903012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210309999999 - 2⁴ = 210309999983 is a prime.

210309999999 is a modest number, since divided by 999999 gives 210309 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210309999199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3186515119 + ... + 3186515184.

It is an arithmetic number, because the mean of its divisors is an integer number (38238181824).

Almost surely, 2^210309999999 is an apocalyptic number.

210309999999 is a deficient number, since it is larger than the sum of its proper divisors (95595454593).

210309999999 is a wasteful number, since it uses less digits than its factorization.

210309999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373030317.

The product of its (nonzero) digits is 28697814, while the sum is 69.

The spelling of 210309999999 in words is "two hundred ten billion, three hundred nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".