66299005641 has 8 divisors (see below), whose sum is σ = 96434917344. Its totient is φ = 40181215520.

The previous prime is 66299005621. The next prime is 66299005651. The reversal of 66299005641 is 14650099266.

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 66299005641 - 2²² = 66294811337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66299005621) 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, 1004530356 + ... + 1004530421.

It is an arithmetic number, because the mean of its divisors is an integer number (12054364668).

Almost surely, 2^66299005641 is an apocalyptic number.

It is an amenable number.

66299005641 is a deficient number, since it is larger than the sum of its proper divisors (30135911703).

66299005641 is a wasteful number, since it uses less digits than its factorization.

66299005641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009060791.

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 66299005641 in words is "sixty-six billion, two hundred ninety-nine million, five thousand, six hundred forty-one".