66655471001 has 8 divisors (see below), whose sum is σ = 76211661504. Its totient is φ = 57107775600.

The previous prime is 66655470997. The next prime is 66655471009. The reversal of 66655471001 is 10017455666.

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 66655471001 - 2² = 66655470997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66655471001.

It is not an unprimeable number, because it can be changed into a prime (66655471009) 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, 2106950 + ... + 2138351.

It is an arithmetic number, because the mean of its divisors is an integer number (9526457688).

Almost surely, 2^66655471001 is an apocalyptic number.

It is an amenable number.

66655471001 is a deficient number, since it is larger than the sum of its proper divisors (9556190503).

66655471001 is a wasteful number, since it uses less digits than its factorization.

66655471001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247551.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 66655471001 in words is "sixty-six billion, six hundred fifty-five million, four hundred seventy-one thousand, one".