1226077440161 has 4 divisors (see below), whose sum is σ = 1401231360192. Its totient is φ = 1050923520132.

The previous prime is 1226077440113. The next prime is 1226077440173. The reversal of 1226077440161 is 1610447706221.

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 1226077440161 - 2¹⁸ = 1226077178017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226077446161) 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, 87576960005 + ... + 87576960018.

It is an arithmetic number, because the mean of its divisors is an integer number (350307840048).

Almost surely, 2^{1226077440161} is an apocalyptic number.

It is an amenable number.

1226077440161 is a deficient number, since it is larger than the sum of its proper divisors (175153920031).

1226077440161 is an equidigital number, since it uses as much as digits as its factorization.

1226077440161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175153920030.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 1226077440161 in words is "one trillion, two hundred twenty-six billion, seventy-seven million, four hundred forty thousand, one hundred sixty-one".