66264610897 has 8 divisors (see below), whose sum is σ = 70020944640. Its totient is φ = 62581215840.

The previous prime is 66264610891. The next prime is 66264610927. The reversal of 66264610897 is 79801646266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66264610897 - 2³ = 66264610889 is a prime.

It is a super-2 number, since 2×66264610897² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66264610891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18232804 + ... + 18236437.

It is an arithmetic number, because the mean of its divisors is an integer number (8752618080).

Almost surely, 2^66264610897 is an apocalyptic number.

It is an amenable number.

66264610897 is a deficient number, since it is larger than the sum of its proper divisors (3756333743).

66264610897 is a wasteful number, since it uses less digits than its factorization.

66264610897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36469343.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 66264610897 in words is "sixty-six billion, two hundred sixty-four million, six hundred ten thousand, eight hundred ninety-seven".