1226293580161 has 4 divisors (see below), whose sum is σ = 1320623855572. Its totient is φ = 1131963304752.

The previous prime is 1226293580159. The next prime is 1226293580221. The reversal of 1226293580161 is 1610853926221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 273444280561 + 952849299600 = 522919^2 + 976140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226293580161 - 2¹ = 1226293580159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226293580131) 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, 47165137686 + ... + 47165137711.

It is an arithmetic number, because the mean of its divisors is an integer number (330155963893).

Almost surely, 2^{1226293580161} is an apocalyptic number.

It is an amenable number.

1226293580161 is a deficient number, since it is larger than the sum of its proper divisors (94330275411).

1226293580161 is an equidigital number, since it uses as much as digits as its factorization.

1226293580161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94330275410.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 1226293580161 in words is "one trillion, two hundred twenty-six billion, two hundred ninety-three million, five hundred eighty thousand, one hundred sixty-one".