66160011656441 has 4 divisors (see below), whose sum is σ = 66163816816272. Its totient is φ = 66156206496612.

The previous prime is 66160011656423. The next prime is 66160011656443. The reversal of 66160011656441 is 14465611006166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66160011656441 - 2¹⁸ = 66160011394297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66160011656443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1902553835 + ... + 1902588608.

It is an arithmetic number, because the mean of its divisors is an integer number (16540954204068).

Almost surely, 2^{66160011656441} is an apocalyptic number.

It is an amenable number.

66160011656441 is a deficient number, since it is larger than the sum of its proper divisors (3805159831).

66160011656441 is a wasteful number, since it uses less digits than its factorization.

66160011656441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805159830.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 66160011656441 in words is "sixty-six trillion, one hundred sixty billion, eleven million, six hundred fifty-six thousand, four hundred forty-one".