1156530141123 has 16 divisors (see below), whose sum is σ = 1766770778880. Its totient is φ = 659209690656.

The previous prime is 1156530141121. The next prime is 1156530141149. The reversal of 1156530141123 is 3211410356511.

It is a happy number.

It is not a de Polignac number, because 1156530141123 - 2¹ = 1156530141121 is a prime.

It is a super-2 number, since 2×1156530141123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1156530141121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69352953 + ... + 69369626.

It is an arithmetic number, because the mean of its divisors is an integer number (110423173680).

Almost surely, 2^{1156530141123} is an apocalyptic number.

1156530141123 is a deficient number, since it is larger than the sum of its proper divisors (610240637757).

1156530141123 is a wasteful number, since it uses less digits than its factorization.

1156530141123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138722986.

The product of its (nonzero) digits is 10800, while the sum is 33.

Adding to 1156530141123 its reverse (3211410356511), we get a palindrome (4367940497634).

The spelling of 1156530141123 in words is "one trillion, one hundred fifty-six billion, five hundred thirty million, one hundred forty-one thousand, one hundred twenty-three".