999971000210 has 64 divisors (see below), whose sum is σ = 2215455508224. Its totient is φ = 316455033600.

The previous prime is 999971000191. The next prime is 999971000257. The reversal of 999971000210 is 12000179999.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25980380 + ... + 26018840.

It is an arithmetic number, because the mean of its divisors is an integer number (34616492316).

Almost surely, 2^999971000210 is an apocalyptic number.

It is a pronic number, being equal to 999985×999986.

999971000210 is an abundant number, since it is smaller than the sum of its proper divisors (1215484508014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999971000210 is a wasteful number, since it uses less digits than its factorization.

999971000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67059.

The product of its (nonzero) digits is 91854, while the sum is 47.

The spelling of 999971000210 in words is "nine hundred ninety-nine billion, nine hundred seventy-one million, two hundred ten", and thus it is an aban number.