1656607826243 has 8 divisors (see below), whose sum is σ = 1695353307648. Its totient is φ = 1617872332104.

The previous prime is 1656607826227. The next prime is 1656607826249. The reversal of 1656607826243 is 3426287066561.

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 1656607826243 - 2⁴ = 1656607826227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1656607826249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2160671 + ... + 2825192.

It is an arithmetic number, because the mean of its divisors is an integer number (211919163456).

Almost surely, 2^{1656607826243} is an apocalyptic number.

1656607826243 is a deficient number, since it is larger than the sum of its proper divisors (38745481405).

1656607826243 is an equidigital number, since it uses as much as digits as its factorization.

1656607826243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993633.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 1656607826243 in words is "one trillion, six hundred fifty-six billion, six hundred seven million, eight hundred twenty-six thousand, two hundred forty-three".