51667711523 has 2 divisors, whose sum is σ = 51667711524. Its totient is φ = 51667711522.

The previous prime is 51667711483. The next prime is 51667711531. The reversal of 51667711523 is 32511776615.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51667711523 - 2¹⁴ = 51667695139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51667711553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25833855761 + 25833855762.

It is an arithmetic number, because the mean of its divisors is an integer number (25833855762).

Almost surely, 2^51667711523 is an apocalyptic number.

51667711523 is a deficient number, since it is larger than the sum of its proper divisors (1).

51667711523 is an equidigital number, since it uses as much as digits as its factorization.

51667711523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 44.

The spelling of 51667711523 in words is "fifty-one billion, six hundred sixty-seven million, seven hundred eleven thousand, five hundred twenty-three".