210640132999 has 4 divisors (see below), whose sum is σ = 210641353960. Its totient is φ = 210638912040.

The previous prime is 210640132951. The next prime is 210640133009. The reversal of 210640132999 is 999231046012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210640132999 - 2³³ = 202050198407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210640132909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298584 + ... + 714445.

It is an arithmetic number, because the mean of its divisors is an integer number (52660338490).

Almost surely, 2^210640132999 is an apocalyptic number.

210640132999 is a deficient number, since it is larger than the sum of its proper divisors (1220961).

210640132999 is a wasteful number, since it uses less digits than its factorization.

210640132999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220960.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 210640132999 in words is "two hundred ten billion, six hundred forty million, one hundred thirty-two thousand, nine hundred ninety-nine".