368518138020061 has 2 divisors, whose sum is σ = 368518138020062. Its totient is φ = 368518138020060.

The previous prime is 368518138020049. The next prime is 368518138020163. The reversal of 368518138020061 is 160020831815863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366588692008036 + 1929446012025 = 19146506^2 + 1389045^2 .

It is a cyclic number.

It is not a de Polignac number, because 368518138020061 - 2¹³ = 368518138011869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 368518138019990 and 368518138020008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (368518138020031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184259069010030 + 184259069010031.

It is an arithmetic number, because the mean of its divisors is an integer number (184259069010031).

Almost surely, 2^{368518138020061} is an apocalyptic number.

It is an amenable number.

368518138020061 is a deficient number, since it is larger than the sum of its proper divisors (1).

368518138020061 is an equidigital number, since it uses as much as digits as its factorization.

368518138020061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 368518138020061 in words is "three hundred sixty-eight trillion, five hundred eighteen billion, one hundred thirty-eight million, twenty thousand, sixty-one".