55707077761 has 4 divisors (see below), whose sum is σ = 55711183572. Its totient is φ = 55702971952.

The previous prime is 55707077749. The next prime is 55707077801. The reversal of 55707077761 is 16777070755.

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 11546577025 + 44160500736 = 107455^2 + 210144^2 .

It is a cyclic number.

It is not a de Polignac number, because 55707077761 - 2⁷ = 55707077633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55707077699 and 55707077708.

It is not an unprimeable number, because it can be changed into a prime (55707017761) 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, 2032486 + ... + 2059711.

It is an arithmetic number, because the mean of its divisors is an integer number (13927795893).

Almost surely, 2^55707077761 is an apocalyptic number.

It is an amenable number.

55707077761 is a deficient number, since it is larger than the sum of its proper divisors (4105811).

55707077761 is a wasteful number, since it uses less digits than its factorization.

55707077761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105810.

The product of its (nonzero) digits is 2521050, while the sum is 52.

The spelling of 55707077761 in words is "fifty-five billion, seven hundred seven million, seventy-seven thousand, seven hundred sixty-one".