51701238377 has 2 divisors, whose sum is σ = 51701238378. Its totient is φ = 51701238376.

The previous prime is 51701238361. The next prime is 51701238401. The reversal of 51701238377 is 77383210715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45490064656 + 6211173721 = 213284^2 + 78811^2 .

It is a cyclic number.

It is not a de Polignac number, because 51701238377 - 2⁴ = 51701238361 is a prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (51701238317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25850619188 + 25850619189.

It is an arithmetic number, because the mean of its divisors is an integer number (25850619189).

Almost surely, 2^51701238377 is an apocalyptic number.

It is an amenable number.

51701238377 is a deficient number, since it is larger than the sum of its proper divisors (1).

51701238377 is an equidigital number, since it uses as much as digits as its factorization.

51701238377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 44.

The spelling of 51701238377 in words is "fifty-one billion, seven hundred one million, two hundred thirty-eight thousand, three hundred seventy-seven".