211955045039 has 2 divisors, whose sum is σ = 211955045040. Its totient is φ = 211955045038.

The previous prime is 211955044993. The next prime is 211955045051. The reversal of 211955045039 is 930540559112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211955045039 - 2³² = 207660077743 is a prime.

It is a super-2 number, since 2×211955045039² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211955045539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105977522519 + 105977522520.

It is an arithmetic number, because the mean of its divisors is an integer number (105977522520).

Almost surely, 2^211955045039 is an apocalyptic number.

211955045039 is a deficient number, since it is larger than the sum of its proper divisors (1).

211955045039 is an equidigital number, since it uses as much as digits as its factorization.

211955045039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 44.

The spelling of 211955045039 in words is "two hundred eleven billion, nine hundred fifty-five million, forty-five thousand, thirty-nine".