51777737353 has 4 divisors (see below), whose sum is σ = 51943161748. Its totient is φ = 51612312960.

The previous prime is 51777737339. The next prime is 51777737377. The reversal of 51777737353 is 35373777715.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26283867129 + 25493870224 = 162123^2 + 159668^2 .

It is a cyclic number.

It is not a de Polignac number, because 51777737353 - 2¹⁷ = 51777606281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51777737294 and 51777737303.

It is not an unprimeable number, because it can be changed into a prime (51777735353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82711728 + ... + 82712353.

It is an arithmetic number, because the mean of its divisors is an integer number (12985790437).

Almost surely, 2^51777737353 is an apocalyptic number.

It is an amenable number.

51777737353 is a deficient number, since it is larger than the sum of its proper divisors (165424395).

51777737353 is a wasteful number, since it uses less digits than its factorization.

51777737353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165424394.

The product of its digits is 11344725, while the sum is 55.

The spelling of 51777737353 in words is "fifty-one billion, seven hundred seventy-seven million, seven hundred thirty-seven thousand, three hundred fifty-three".