51155543603 has 2 divisors, whose sum is σ = 51155543604. Its totient is φ = 51155543602.

The previous prime is 51155543597. The next prime is 51155543629. The reversal of 51155543603 is 30634555115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51155543603 - 2⁶ = 51155543539 is a prime.

It is not a weakly prime, because it can be changed into another prime (51155503603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25577771801 + 25577771802.

It is an arithmetic number, because the mean of its divisors is an integer number (25577771802).

Almost surely, 2^51155543603 is an apocalyptic number.

51155543603 is a deficient number, since it is larger than the sum of its proper divisors (1).

51155543603 is an equidigital number, since it uses as much as digits as its factorization.

51155543603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 51155543603 in words is "fifty-one billion, one hundred fifty-five million, five hundred forty-three thousand, six hundred three".