55665741877 has 4 divisors (see below), whose sum is σ = 55666242016. Its totient is φ = 55665241740.

The previous prime is 55665741863. The next prime is 55665741893. The reversal of 55665741877 is 77814756655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 77814756655 = 5 ⋅15562951331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55665741877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665741377) 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, 718 + ... + 333664.

It is an arithmetic number, because the mean of its divisors is an integer number (13916560504).

Almost surely, 2^55665741877 is an apocalyptic number.

It is an amenable number.

55665741877 is a deficient number, since it is larger than the sum of its proper divisors (500139).

55665741877 is a wasteful number, since it uses less digits than its factorization.

55665741877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500138.

The product of its digits is 49392000, while the sum is 61.

The spelling of 55665741877 in words is "fifty-five billion, six hundred sixty-five million, seven hundred forty-one thousand, eight hundred seventy-seven".