51381088511 has 2 divisors, whose sum is σ = 51381088512. Its totient is φ = 51381088510.

The previous prime is 51381088501. The next prime is 51381088537. The reversal of 51381088511 is 11588018315.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51381088511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51381088501) 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 as a sum of consecutive naturals, namely, 25690544255 + 25690544256.

It is an arithmetic number, because the mean of its divisors is an integer number (25690544256).

Almost surely, 2^51381088511 is an apocalyptic number.

51381088511 is a deficient number, since it is larger than the sum of its proper divisors (1).

51381088511 is an equidigital number, since it uses as much as digits as its factorization.

51381088511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 41.

The spelling of 51381088511 in words is "fifty-one billion, three hundred eighty-one million, eighty-eight thousand, five hundred eleven".