211932630989377 has 2 divisors, whose sum is σ = 211932630989378. Its totient is φ = 211932630989376.

The previous prime is 211932630989333. The next prime is 211932630989393. The reversal of 211932630989377 is 773989036239112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194899915950336 + 17032715039041 = 13960656^2 + 4127071^2 .

It is a cyclic number.

It is not a de Polignac number, because 211932630989377 - 2³¹ = 211930483505729 is a prime.

It is not a weakly prime, because it can be changed into another prime (211932630959377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105966315494688 + 105966315494689.

It is an arithmetic number, because the mean of its divisors is an integer number (105966315494689).

Almost surely, 2^{211932630989377} is an apocalyptic number.

It is an amenable number.

211932630989377 is a deficient number, since it is larger than the sum of its proper divisors (1).

211932630989377 is an equidigital number, since it uses as much as digits as its factorization.

211932630989377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185177664, while the sum is 70.

The spelling of 211932630989377 in words is "two hundred eleven trillion, nine hundred thirty-two billion, six hundred thirty million, nine hundred eighty-nine thousand, three hundred seventy-seven".