66926535786496 has 45 divisors (see below), whose sum is σ = 133851080971461. Its totient is φ = 33462744317952.

The previous prime is 66926535786469. The next prime is 66926535786503. The reversal of 66926535786496 is 69468753562966.

The square root of 66926535786496 is 8180864.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 38420162560000 + 28506373226496 = 6198400^2 + 5339136^2 .

It is a super-2 number, since 2×66926535786496² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1047118636 + ... + 1047182548.

Almost surely, 2^{66926535786496} is an apocalyptic number.

66926535786496 is the 8180864-th square number.

It is an amenable number.

66926535786496 is a deficient number, since it is larger than the sum of its proper divisors (66924545184965).

66926535786496 is an frugal number, since it uses more digits than its factorization.

66926535786496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127854 (or 63915 counting only the distinct ones).

The product of its digits is 21163161600, while the sum is 82.

The spelling of 66926535786496 in words is "sixty-six trillion, nine hundred twenty-six billion, five hundred thirty-five million, seven hundred eighty-six thousand, four hundred ninety-six".