66655417327 has 8 divisors (see below), whose sum is σ = 67321515312. Its totient is φ = 65989440000.

The previous prime is 66655417313. The next prime is 66655417331. The reversal of 66655417327 is 72371455666.

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 66655417327 - 2²⁷ = 66521199599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66655417027) 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, 1431588 + ... + 1477414.

It is an arithmetic number, because the mean of its divisors is an integer number (8415189414).

Almost surely, 2^66655417327 is an apocalyptic number.

66655417327 is a deficient number, since it is larger than the sum of its proper divisors (666097985).

66655417327 is a wasteful number, since it uses less digits than its factorization.

66655417327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60329.

The product of its digits is 6350400, while the sum is 52.

The spelling of 66655417327 in words is "sixty-six billion, six hundred fifty-five million, four hundred seventeen thousand, three hundred twenty-seven".