51423463503 has 48 divisors (see below), whose sum is σ = 79085313216. Its totient is φ = 32131123200.

The previous prime is 51423463471. The next prime is 51423463517. The reversal of 51423463503 is 30536432415.

51423463503 is a `hidden beast` number, since 5 + 14 + 2 + 3 + 4 + 635 + 0 + 3 = 666.

It is not a de Polignac number, because 51423463503 - 2⁵ = 51423463471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51423463583) 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, 2015301 + ... + 2040657.

It is an arithmetic number, because the mean of its divisors is an integer number (1647610692).

Almost surely, 2^51423463503 is an apocalyptic number.

51423463503 is a deficient number, since it is larger than the sum of its proper divisors (27661849713).

51423463503 is a wasteful number, since it uses less digits than its factorization.

51423463503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25584 (or 25581 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 51423463503 its reverse (30536432415), we get a palindrome (81959895918).

The spelling of 51423463503 in words is "fifty-one billion, four hundred twenty-three million, four hundred sixty-three thousand, five hundred three".