50777763557 has 2 divisors, whose sum is σ = 50777763558. Its totient is φ = 50777763556.

The previous prime is 50777763523. The next prime is 50777763571. The reversal of 50777763557 is 75536777705.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50773158241 + 4605316 = 225329^2 + 2146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50777763557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50777763496 and 50777763505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50777733557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25388881778 + 25388881779.

It is an arithmetic number, because the mean of its divisors is an integer number (25388881779).

Almost surely, 2^50777763557 is an apocalyptic number.

It is an amenable number.

50777763557 is a deficient number, since it is larger than the sum of its proper divisors (1).

50777763557 is an equidigital number, since it uses as much as digits as its factorization.

50777763557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37815750, while the sum is 59.

The spelling of 50777763557 in words is "fifty billion, seven hundred seventy-seven million, seven hundred sixty-three thousand, five hundred fifty-seven".