211273657673573 has 4 divisors (see below), whose sum is σ = 230480353825728. Its totient is φ = 192066961521420.

The previous prime is 211273657673563. The next prime is 211273657673609. The reversal of 211273657673573 is 375376756372112.

211273657673573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211273657673573 - 2⁶ = 211273657673509 is a prime.

It is a super-2 number, since 2×211273657673573² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211273657673563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9603348076061 + ... + 9603348076082.

It is an arithmetic number, because the mean of its divisors is an integer number (57620088456432).

Almost surely, 2^{211273657673573} is an apocalyptic number.

It is an amenable number.

211273657673573 is a deficient number, since it is larger than the sum of its proper divisors (19206696152155).

211273657673573 is a wasteful number, since it uses less digits than its factorization.

211273657673573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19206696152154.

The product of its digits is 233377200, while the sum is 65.

The spelling of 211273657673573 in words is "two hundred eleven trillion, two hundred seventy-three billion, six hundred fifty-seven million, six hundred seventy-three thousand, five hundred seventy-three".