1246166543041 has 4 divisors (see below), whose sum is σ = 1424190334912. Its totient is φ = 1068142751172.

The previous prime is 1246166542967. The next prime is 1246166543071. The reversal of 1246166543041 is 1403456616421.

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 not a de Polignac number, because 1246166543041 - 2¹⁷ = 1246166411969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1246166543071) 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, 89011895925 + ... + 89011895938.

It is an arithmetic number, because the mean of its divisors is an integer number (356047583728).

Almost surely, 2^{1246166543041} is an apocalyptic number.

It is an amenable number.

1246166543041 is a deficient number, since it is larger than the sum of its proper divisors (178023791871).

1246166543041 is an equidigital number, since it uses as much as digits as its factorization.

1246166543041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178023791870.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 1246166543041 in words is "one trillion, two hundred forty-six billion, one hundred sixty-six million, five hundred forty-three thousand, forty-one".