1226134061557 has 8 divisors (see below), whose sum is σ = 1235123090712. Its totient is φ = 1217145600000.

The previous prime is 1226134061539. The next prime is 1226134061567. The reversal of 1226134061557 is 7551604316221.

It can be written as a sum of positive squares in 4 ways, for example, as 337989914161 + 888144147396 = 581369^2 + 942414^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1226134061557 - 2²³ = 1226125672949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226134061567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4830307 + ... + 5077807.

It is an arithmetic number, because the mean of its divisors is an integer number (154390386339).

Almost surely, 2^{1226134061557} is an apocalyptic number.

It is an amenable number.

1226134061557 is a deficient number, since it is larger than the sum of its proper divisors (8989029155).

1226134061557 is a wasteful number, since it uses less digits than its factorization.

1226134061557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283799.

The product of its (nonzero) digits is 302400, while the sum is 43.

Adding to 1226134061557 its reverse (7551604316221), we get a palindrome (8777738377778).

The spelling of 1226134061557 in words is "one trillion, two hundred twenty-six billion, one hundred thirty-four million, sixty-one thousand, five hundred fifty-seven".