66426262465 has 16 divisors (see below), whose sum is σ = 79816036608. Its totient is φ = 53071387776.

The previous prime is 66426262453. The next prime is 66426262477. The reversal of 66426262465 is 56426262466.

It is an interprime number because it is at equal distance from previous prime (66426262453) and next prime (66426262477).

It is a cyclic number.

It is not a de Polignac number, because 66426262465 - 2¹⁵ = 66426229697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19868584 + ... + 19871926.

It is an arithmetic number, because the mean of its divisors is an integer number (4988502288).

Almost surely, 2^66426262465 is an apocalyptic number.

It is an amenable number.

66426262465 is a deficient number, since it is larger than the sum of its proper divisors (13389774143).

66426262465 is a wasteful number, since it uses less digits than its factorization.

66426262465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7368.

The product of its digits is 4976640, while the sum is 49.

Subtracting from 66426262465 its reverse (56426262466), we obtain a palindrome (9999999999).

The spelling of 66426262465 in words is "sixty-six billion, four hundred twenty-six million, two hundred sixty-two thousand, four hundred sixty-five".