210011001993 has 64 divisors (see below), whose sum is σ = 340089792000. Its totient is φ = 127302202368.

The previous prime is 210011001983. The next prime is 210011002009. The reversal of 210011001993 is 399100110012.

It is not a de Polignac number, because 210011001993 - 2⁶ = 210011001929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210011001953) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21492813 + ... + 21502581.

It is an arithmetic number, because the mean of its divisors is an integer number (5313903000).

Almost surely, 2^210011001993 is an apocalyptic number.

It is an amenable number.

210011001993 is a deficient number, since it is larger than the sum of its proper divisors (130078790007).

210011001993 is a wasteful number, since it uses less digits than its factorization.

210011001993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10703 (or 10697 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The spelling of 210011001993 in words is "two hundred ten billion, eleven million, one thousand, nine hundred ninety-three".