66410563495 has 16 divisors (see below), whose sum is σ = 84387251520. Its totient is φ = 49999235584.

The previous prime is 66410563451. The next prime is 66410563501. The reversal of 66410563495 is 59436501466.

It is a cyclic number.

It is not a de Polignac number, because 66410563495 - 2²⁷ = 66276345767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1435749 + ... + 1481281.

It is an arithmetic number, because the mean of its divisors is an integer number (5274203220).

Almost surely, 2^66410563495 is an apocalyptic number.

66410563495 is a deficient number, since it is larger than the sum of its proper divisors (17976688025).

66410563495 is a wasteful number, since it uses less digits than its factorization.

66410563495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62714.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 66410563495 in words is "sixty-six billion, four hundred ten million, five hundred sixty-three thousand, four hundred ninety-five".