66768596298239 has 16 divisors (see below), whose sum is σ = 73865697085440. Its totient is φ = 59844892380000.

The previous prime is 66768596298137. The next prime is 66768596298281. The reversal of 66768596298239 is 93289269586766.

It is a cyclic number.

It is not a de Polignac number, because 66768596298239 - 2¹⁶ = 66768596232703 is a prime.

It is a super-2 number, since 2×66768596298239² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66768596898239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54193847 + ... + 55412184.

It is an arithmetic number, because the mean of its divisors is an integer number (4616606067840).

Almost surely, 2^{66768596298239} is an apocalyptic number.

66768596298239 is a deficient number, since it is larger than the sum of its proper divisors (7097100787201).

66768596298239 is a wasteful number, since it uses less digits than its factorization.

66768596298239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109606822.

The product of its digits is 25395793920, while the sum is 86.

The spelling of 66768596298239 in words is "sixty-six trillion, seven hundred sixty-eight billion, five hundred ninety-six million, two hundred ninety-eight thousand, two hundred thirty-nine".