51903344603 has 4 divisors (see below), whose sum is σ = 56621830488. Its totient is φ = 47184858720.

The previous prime is 51903344599. The next prime is 51903344621. The reversal of 51903344603 is 30644330915.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51903344603 - 2² = 51903344599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51903344503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2359242926 + ... + 2359242947.

It is an arithmetic number, because the mean of its divisors is an integer number (14155457622).

Almost surely, 2^51903344603 is an apocalyptic number.

51903344603 is a deficient number, since it is larger than the sum of its proper divisors (4718485885).

51903344603 is a wasteful number, since it uses less digits than its factorization.

51903344603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718485884.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 51903344603 in words is "fifty-one billion, nine hundred three million, three hundred forty-four thousand, six hundred three".