1046626565891 has 2 divisors, whose sum is σ = 1046626565892. Its totient is φ = 1046626565890.

The previous prime is 1046626565749. The next prime is 1046626565899. The reversal of 1046626565891 is 1985656266401.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1046626565891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1046626565891.

It is not a weakly prime, because it can be changed into another prime (1046626565899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523313282945 + 523313282946.

It is an arithmetic number, because the mean of its divisors is an integer number (523313282946).

Almost surely, 2^{1046626565891} is an apocalyptic number.

1046626565891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1046626565891 is an equidigital number, since it uses as much as digits as its factorization.

1046626565891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18662400, while the sum is 59.

The spelling of 1046626565891 in words is "one trillion, forty-six billion, six hundred twenty-six million, five hundred sixty-five thousand, eight hundred ninety-one".