1123345555557 has 8 divisors (see below), whose sum is σ = 1502610133440. Its totient is φ = 746489007360.

The previous prime is 1123345555547. The next prime is 1123345555601. The reversal of 1123345555557 is 7555555433211.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1123345555557 is a prime.

It is a super-3 number, since 3×1123345555557³ (a number of 37 digits) contains 333 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123345555547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602006332 + ... + 602008197.

It is an arithmetic number, because the mean of its divisors is an integer number (187826266680).

Almost surely, 2^{1123345555557} is an apocalyptic number.

It is an amenable number.

1123345555557 is a deficient number, since it is larger than the sum of its proper divisors (379264577883).

1123345555557 is a wasteful number, since it uses less digits than its factorization.

1123345555557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204014843.

The product of its digits is 7875000, while the sum is 51.

The spelling of 1123345555557 in words is "one trillion, one hundred twenty-three billion, three hundred forty-five million, five hundred fifty-five thousand, five hundred fifty-seven".