66463549495 has 16 divisors (see below), whose sum is σ = 92174172480. Its totient is φ = 45062924544.

The previous prime is 66463549459. The next prime is 66463549499. The reversal of 66463549495 is 59494536466.

It is a cyclic number.

It is not a de Polignac number, because 66463549495 - 2²⁵ = 66429995063 is a prime.

It is a super-2 number, since 2×66463549495² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66463549499) 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 15 ways as a sum of consecutive naturals, for example, 10665192 + ... + 10671421.

It is an arithmetic number, because the mean of its divisors is an integer number (5760885780).

Almost surely, 2^66463549495 is an apocalyptic number.

66463549495 is a deficient number, since it is larger than the sum of its proper divisors (25710622985).

66463549495 is a wasteful number, since it uses less digits than its factorization.

66463549495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21336714.

The product of its digits is 83980800, while the sum is 61.

The spelling of 66463549495 in words is "sixty-six billion, four hundred sixty-three million, five hundred forty-nine thousand, four hundred ninety-five".