206124381377 has 2 divisors, whose sum is σ = 206124381378. Its totient is φ = 206124381376.

The previous prime is 206124381367. The next prime is 206124381443. The reversal of 206124381377 is 773183421602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193988274481 + 12136106896 = 440441^2 + 110164^2 .

It is a cyclic number.

It is not a de Polignac number, because 206124381377 - 2²⁴ = 206107604161 is a prime.

It is a super-2 number, since 2×206124381377² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206124381367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103062190688 + 103062190689.

It is an arithmetic number, because the mean of its divisors is an integer number (103062190689).

Almost surely, 2^206124381377 is an apocalyptic number.

It is an amenable number.

206124381377 is a deficient number, since it is larger than the sum of its proper divisors (1).

206124381377 is an equidigital number, since it uses as much as digits as its factorization.

206124381377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 206124381377 in words is "two hundred six billion, one hundred twenty-four million, three hundred eighty-one thousand, three hundred seventy-seven".