51686300933 has 2 divisors, whose sum is σ = 51686300934. Its totient is φ = 51686300932.

The previous prime is 51686300929. The next prime is 51686300983. The reversal of 51686300933 is 33900368615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50975705284 + 710595649 = 225778^2 + 26657^2 .

It is a cyclic number.

It is not a de Polignac number, because 51686300933 - 2² = 51686300929 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51686300983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25843150466 + 25843150467.

It is an arithmetic number, because the mean of its divisors is an integer number (25843150467).

Almost surely, 2^51686300933 is an apocalyptic number.

It is an amenable number.

51686300933 is a deficient number, since it is larger than the sum of its proper divisors (1).

51686300933 is an equidigital number, since it uses as much as digits as its factorization.

51686300933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 51686300933 in words is "fifty-one billion, six hundred eighty-six million, three hundred thousand, nine hundred thirty-three".