51103245123 has 48 divisors (see below), whose sum is σ = 87786167040. Its totient is φ = 28039217472.

The previous prime is 51103245121. The next prime is 51103245197. The reversal of 51103245123 is 32154230115.

51103245123 is a `hidden beast` number, since 5 + 110 + 32 + 4 + 512 + 3 = 666.

It is not a de Polignac number, because 51103245123 - 2¹ = 51103245121 is a prime.

It is a super-2 number, since 2×51103245123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51103245121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36 + ... + 319697.

It is an arithmetic number, because the mean of its divisors is an integer number (1828878480).

Almost surely, 2^51103245123 is an apocalyptic number.

51103245123 is a deficient number, since it is larger than the sum of its proper divisors (36682921917).

51103245123 is a wasteful number, since it uses less digits than its factorization.

51103245123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319848 (or 319845 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 51103245123 its reverse (32154230115), we get a palindrome (83257475238).

The spelling of 51103245123 in words is "fifty-one billion, one hundred three million, two hundred forty-five thousand, one hundred twenty-three".