10556013123 has 32 divisors (see below), whose sum is σ = 15884225280. Its totient is φ = 6927399360.

The previous prime is 10556013119. The next prime is 10556013151. The reversal of 10556013123 is 32131065501.

10556013123 is a `hidden beast` number, since 1 + 0 + 5 + 5 + 601 + 31 + 23 = 666.

It is not a de Polignac number, because 10556013123 - 2² = 10556013119 is a prime.

It is a super-2 number, since 2×10556013123² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10556013163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621340 + ... + 638102.

It is an arithmetic number, because the mean of its divisors is an integer number (496382040).

Almost surely, 2^10556013123 is an apocalyptic number.

10556013123 is a deficient number, since it is larger than the sum of its proper divisors (5328212157).

10556013123 is a wasteful number, since it uses less digits than its factorization.

10556013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17136 (or 17130 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 10556013123 its reverse (32131065501), we get a palindrome (42687078624).

The spelling of 10556013123 in words is "ten billion, five hundred fifty-six million, thirteen thousand, one hundred twenty-three".