50777757861 has 32 divisors (see below), whose sum is σ = 72876764160. Its totient is φ = 31333015296.

The previous prime is 50777757851. The next prime is 50777757871. The reversal of 50777757861 is 16875777705.

50777757861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (50777757851) and next prime (50777757871).

It is not a de Polignac number, because 50777757861 - 2¹³ = 50777749669 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50777757795 and 50777757804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50777757851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2103120 + ... + 2127126.

It is an arithmetic number, because the mean of its divisors is an integer number (2277398880).

Almost surely, 2^50777757861 is an apocalyptic number.

50777757861 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

50777757861 is a deficient number, since it is larger than the sum of its proper divisors (22099006299).

50777757861 is a wasteful number, since it uses less digits than its factorization.

50777757861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24713.

The product of its (nonzero) digits is 20168400, while the sum is 60.

The spelling of 50777757861 in words is "fifty billion, seven hundred seventy-seven million, seven hundred fifty-seven thousand, eight hundred sixty-one".