51505124403 has 16 divisors (see below), whose sum is σ = 69001560320. Its totient is φ = 34172842464.

The previous prime is 51505124387. The next prime is 51505124441. The reversal of 51505124403 is 30442150515.

It is not a de Polignac number, because 51505124403 - 2⁴ = 51505124387 is a prime.

It is a super-2 number, since 2×51505124403² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51505124603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1829250 + ... + 1857192.

It is an arithmetic number, because the mean of its divisors is an integer number (4312597520).

Almost surely, 2^51505124403 is an apocalyptic number.

51505124403 is a deficient number, since it is larger than the sum of its proper divisors (17496435917).

51505124403 is a wasteful number, since it uses less digits than its factorization.

51505124403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30858.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 51505124403 its reverse (30442150515), we get a palindrome (81947274918).

The spelling of 51505124403 in words is "fifty-one billion, five hundred five million, one hundred twenty-four thousand, four hundred three".