51651300793 has 2 divisors, whose sum is σ = 51651300794. Its totient is φ = 51651300792.

The previous prime is 51651300781. The next prime is 51651300829. The reversal of 51651300793 is 39700315615.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36613674409 + 15037626384 = 191347^2 + 122628^2 .

It is a cyclic number.

It is not a de Polignac number, because 51651300793 - 2¹³ = 51651292601 is a prime.

It is not a weakly prime, because it can be changed into another prime (51651390793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25825650396 + 25825650397.

It is an arithmetic number, because the mean of its divisors is an integer number (25825650397).

Almost surely, 2^51651300793 is an apocalyptic number.

It is an amenable number.

51651300793 is a deficient number, since it is larger than the sum of its proper divisors (1).

51651300793 is an equidigital number, since it uses as much as digits as its factorization.

51651300793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85050, while the sum is 40.

The spelling of 51651300793 in words is "fifty-one billion, six hundred fifty-one million, three hundred thousand, seven hundred ninety-three".