51895047511 has 2 divisors, whose sum is σ = 51895047512. Its totient is φ = 51895047510.

The previous prime is 51895047437. The next prime is 51895047517. The reversal of 51895047511 is 11574059815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51895047511 - 2¹³ = 51895039319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51895047517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25947523755 + 25947523756.

It is an arithmetic number, because the mean of its divisors is an integer number (25947523756).

Almost surely, 2^51895047511 is an apocalyptic number.

51895047511 is a deficient number, since it is larger than the sum of its proper divisors (1).

51895047511 is an equidigital number, since it uses as much as digits as its factorization.

51895047511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 46.

The spelling of 51895047511 in words is "fifty-one billion, eight hundred ninety-five million, forty-seven thousand, five hundred eleven".