51206263644503 has 16 divisors (see below), whose sum is σ = 60030138127104. Its totient is φ = 43158922815360.

The previous prime is 51206263644433. The next prime is 51206263644551. The reversal of 51206263644503 is 30544636260215.

51206263644503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51206263644503 - 2¹² = 51206263640407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51206263643503) 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, 2043497075 + ... + 2043522132.

It is an arithmetic number, because the mean of its divisors is an integer number (3751883632944).

Almost surely, 2^{51206263644503} is an apocalyptic number.

51206263644503 is a deficient number, since it is larger than the sum of its proper divisors (8823874482601).

51206263644503 is a wasteful number, since it uses less digits than its factorization.

51206263644503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087019302.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 51206263644503 in words is "fifty-one trillion, two hundred six billion, two hundred sixty-three million, six hundred forty-four thousand, five hundred three".