55992771789 has 4 divisors (see below), whose sum is σ = 74657029056. Its totient is φ = 37328514524.

The previous prime is 55992771781. The next prime is 55992771839. The reversal of 55992771789 is 98717729955.

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.

It is a cyclic number.

It is not a de Polignac number, because 55992771789 - 2³ = 55992771781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55992771781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9332128629 + ... + 9332128634.

It is an arithmetic number, because the mean of its divisors is an integer number (18664257264).

Almost surely, 2^55992771789 is an apocalyptic number.

It is an amenable number.

55992771789 is a deficient number, since it is larger than the sum of its proper divisors (18664257267).

55992771789 is a wasteful number, since it uses less digits than its factorization.

55992771789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18664257266.

The product of its digits is 100018800, while the sum is 69.

The spelling of 55992771789 in words is "fifty-five billion, nine hundred ninety-two million, seven hundred seventy-one thousand, seven hundred eighty-nine".