51130442403 has 8 divisors (see below), whose sum is σ = 75748803600. Its totient is φ = 34086961584.

The previous prime is 51130442327. The next prime is 51130442431. The reversal of 51130442403 is 30424403115.

It is a happy number.

51130442403 is a `hidden beast` number, since 51 + 130 + 442 + 40 + 3 = 666.

It is not a de Polignac number, because 51130442403 - 2⁸ = 51130442147 is a prime.

It is a super-2 number, since 2×51130442403² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1893720089 = 51130442403 / (5 + 1 + 1 + 3 + 0 + 4 + 4 + 2 + 4 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (51130402403) 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, 946860018 + ... + 946860071.

It is an arithmetic number, because the mean of its divisors is an integer number (9468600450).

Almost surely, 2^51130442403 is an apocalyptic number.

51130442403 is a deficient number, since it is larger than the sum of its proper divisors (24618361197).

51130442403 is a wasteful number, since it uses less digits than its factorization.

51130442403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893720098 (or 1893720092 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 51130442403 its reverse (30424403115), we get a palindrome (81554845518).

The spelling of 51130442403 in words is "fifty-one billion, one hundred thirty million, four hundred forty-two thousand, four hundred three".