68154511 has 2 divisors, whose sum is σ = 68154512. Its totient is φ = 68154510.

The previous prime is 68154491. The next prime is 68154517. The reversal of 68154511 is 11545186.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68154511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68154517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34077255 + 34077256.

It is an arithmetic number, because the mean of its divisors is an integer number (34077256).

Almost surely, 2^68154511 is an apocalyptic number.

68154511 is a deficient number, since it is larger than the sum of its proper divisors (1).

68154511 is an equidigital number, since it uses as much as digits as its factorization.

68154511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 31.

The square root of 68154511 is about 8255.5745408784. The cubic root of 68154511 is about 408.4744236951.

Adding to 68154511 its reverse (11545186), we get a palindrome (79699697).

The spelling of 68154511 in words is "sixty-eight million, one hundred fifty-four thousand, five hundred eleven".