51402415203 has 12 divisors (see below), whose sum is σ = 75082180680. Its totient is φ = 33883239456.

The previous prime is 51402415199. The next prime is 51402415231. The reversal of 51402415203 is 30251420415.

51402415203 is a `hidden beast` number, since 5 + 1 + 40 + 2 + 415 + 203 = 666.

It is not a de Polignac number, because 51402415203 - 2² = 51402415199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51402415003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32085601 + ... + 32087202.

It is an arithmetic number, because the mean of its divisors is an integer number (6256848390).

Almost surely, 2^51402415203 is an apocalyptic number.

51402415203 is a deficient number, since it is larger than the sum of its proper divisors (23679765477).

51402415203 is a wasteful number, since it uses less digits than its factorization.

51402415203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64172898 (or 64172895 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 51402415203 its reverse (30251420415), we get a palindrome (81653835618).

The spelling of 51402415203 in words is "fifty-one billion, four hundred two million, four hundred fifteen thousand, two hundred three".