50707599781 has 2 divisors, whose sum is σ = 50707599782. Its totient is φ = 50707599780.

The previous prime is 50707599757. The next prime is 50707599797. The reversal of 50707599781 is 18799570705.

50707599781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46591222500 + 4116377281 = 215850^2 + 64159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50707599781 is a prime.

It is a super-2 number, since 2×50707599781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50707599721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25353799890 + 25353799891.

It is an arithmetic number, because the mean of its divisors is an integer number (25353799891).

Almost surely, 2^50707599781 is an apocalyptic number.

It is an amenable number.

50707599781 is a deficient number, since it is larger than the sum of its proper divisors (1).

50707599781 is an equidigital number, since it uses as much as digits as its factorization.

50707599781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5556600, while the sum is 58.

The spelling of 50707599781 in words is "fifty billion, seven hundred seven million, five hundred ninety-nine thousand, seven hundred eighty-one".