66463621456454 has 16 divisors (see below), whose sum is σ = 102562657490592. Its totient is φ = 32288244014208.

The previous prime is 66463621456433. The next prime is 66463621456459. The reversal of 66463621456454 is 45465412636466.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66463621456459) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3043752659 + ... + 3043774494.

It is an arithmetic number, because the mean of its divisors is an integer number (6410166093162).

Almost surely, 2^{66463621456454} is an apocalyptic number.

66463621456454 is a deficient number, since it is larger than the sum of its proper divisors (36099036034138).

66463621456454 is a wasteful number, since it uses less digits than its factorization.

66463621456454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6087527311.

The product of its digits is 298598400, while the sum is 62.

The spelling of 66463621456454 in words is "sixty-six trillion, four hundred sixty-three billion, six hundred twenty-one million, four hundred fifty-six thousand, four hundred fifty-four".