55788738865 has 8 divisors (see below), whose sum is σ = 66974476968. Its totient is φ = 44612330880.

The previous prime is 55788738791. The next prime is 55788738869. The reversal of 55788738865 is 56883788755.

55788738865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 376049664 + 55412689201 = 19392^2 + 235399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55788738865 - 2¹⁷ = 55788607793 is a prime.

It is a super-2 number, since 2×55788738865² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55788738794 and 55788738803.

It is not an unprimeable number, because it can be changed into a prime (55788738869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2319366 + ... + 2343295.

It is an arithmetic number, because the mean of its divisors is an integer number (8371809621).

Almost surely, 2^55788738865 is an apocalyptic number.

It is an amenable number.

55788738865 is a deficient number, since it is larger than the sum of its proper divisors (11185738103).

55788738865 is a wasteful number, since it uses less digits than its factorization.

55788738865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665059.

The product of its digits is 451584000, while the sum is 70.

The spelling of 55788738865 in words is "fifty-five billion, seven hundred eighty-eight million, seven hundred thirty-eight thousand, eight hundred sixty-five".