55789557789 has 32 divisors (see below), whose sum is σ = 86780620800. Its totient is φ = 31222268352.

The previous prime is 55789557787. The next prime is 55789557847. The reversal of 55789557789 is 98775598755.

55789557789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55789557789 - 2¹ = 55789557787 is a prime.

It is a super-2 number, since 2×55789557789² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55789557789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55789557787) 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, 128812 + ... + 358010.

It is an arithmetic number, because the mean of its divisors is an integer number (2711894400).

Almost surely, 2^55789557789 is an apocalyptic number.

It is an amenable number.

55789557789 is a deficient number, since it is larger than the sum of its proper divisors (30991063011).

55789557789 is a wasteful number, since it uses less digits than its factorization.

55789557789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229449.

The product of its digits is 1111320000, while the sum is 75.

The spelling of 55789557789 in words is "fifty-five billion, seven hundred eighty-nine million, five hundred fifty-seven thousand, seven hundred eighty-nine".