68654183377 has 4 divisors (see below), whose sum is σ = 73935274420. Its totient is φ = 63373092336.

The previous prime is 68654183369. The next prime is 68654183399. The reversal of 68654183377 is 77338145686.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77338145686 = 2 ⋅38669072843.

It can be written as a sum of positive squares in 2 ways, for example, as 26645991696 + 42008191681 = 163236^2 + 204959^2 .

It is a cyclic number.

It is not a de Polignac number, because 68654183377 - 2³ = 68654183369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68654183977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2640545502 + ... + 2640545527.

It is an arithmetic number, because the mean of its divisors is an integer number (18483818605).

Almost surely, 2^68654183377 is an apocalyptic number.

It is an amenable number.

68654183377 is a deficient number, since it is larger than the sum of its proper divisors (5281091043).

68654183377 is a wasteful number, since it uses less digits than its factorization.

68654183377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5281091042.

The product of its digits is 20321280, while the sum is 58.

The spelling of 68654183377 in words is "sixty-eight billion, six hundred fifty-four million, one hundred eighty-three thousand, three hundred seventy-seven".