1226754161553 has 4 divisors (see below), whose sum is σ = 1635672215408. Its totient is φ = 817836107700.

The previous prime is 1226754161533. The next prime is 1226754161627. The reversal of 1226754161553 is 3551614576221.

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 1226754161553 - 2⁶ = 1226754161489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1226754161533) 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, 204459026923 + ... + 204459026928.

It is an arithmetic number, because the mean of its divisors is an integer number (408918053852).

Almost surely, 2^{1226754161553} is an apocalyptic number.

It is an amenable number.

1226754161553 is a deficient number, since it is larger than the sum of its proper divisors (408918053855).

1226754161553 is an equidigital number, since it uses as much as digits as its factorization.

1226754161553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408918053854.

The product of its digits is 1512000, while the sum is 48.

The spelling of 1226754161553 in words is "one trillion, two hundred twenty-six billion, seven hundred fifty-four million, one hundred sixty-one thousand, five hundred fifty-three".