66415363195 has 8 divisors (see below), whose sum is σ = 79705710144. Its totient is φ = 53127441024.

The previous prime is 66415363177. The next prime is 66415363253. The reversal of 66415363195 is 59136351466.

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 66415363195 - 2⁵ = 66415363163 is a prime.

It is a super-2 number, since 2×66415363195² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545379 + ... + 655948.

It is an arithmetic number, because the mean of its divisors is an integer number (9963213768).

Almost surely, 2^66415363195 is an apocalyptic number.

66415363195 is a deficient number, since it is larger than the sum of its proper divisors (13290346949).

66415363195 is a wasteful number, since it uses less digits than its factorization.

66415363195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212389.

The product of its digits is 1749600, while the sum is 49.

The spelling of 66415363195 in words is "sixty-six billion, four hundred fifteen million, three hundred sixty-three thousand, one hundred ninety-five".