51637904011 has 2 divisors, whose sum is σ = 51637904012. Its totient is φ = 51637904010.

The previous prime is 51637903997. The next prime is 51637904057. The reversal of 51637904011 is 11040973615.

It is a happy number.

51637904011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51637904011 - 2⁷ = 51637903883 is a prime.

It is not a weakly prime, because it can be changed into another prime (51637304011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25818952005 + 25818952006.

It is an arithmetic number, because the mean of its divisors is an integer number (25818952006).

Almost surely, 2^51637904011 is an apocalyptic number.

51637904011 is a deficient number, since it is larger than the sum of its proper divisors (1).

51637904011 is an equidigital number, since it uses as much as digits as its factorization.

51637904011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 51637904011 in words is "fifty-one billion, six hundred thirty-seven million, nine hundred four thousand, eleven".