55389115710987 has 8 divisors (see below), whose sum is σ = 73866191967120. Its totient is φ = 36919058297760.

The previous prime is 55389115710977. The next prime is 55389115710997. The reversal of 55389115710987 is 78901751198355.

It is an interprime number because it is at equal distance from previous prime (55389115710977) and next prime (55389115710997).

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

It is not a de Polignac number, because 55389115710987 - 2¹⁵ = 55389115678219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55389115710977) 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 7 ways as a sum of consecutive naturals, for example, 1754692312 + ... + 1754723877.

It is an arithmetic number, because the mean of its divisors is an integer number (9233273995890).

Almost surely, 2^{55389115710987} is an apocalyptic number.

55389115710987 is a deficient number, since it is larger than the sum of its proper divisors (18477076256133).

55389115710987 is a wasteful number, since it uses less digits than its factorization.

55389115710987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509421453.

The product of its (nonzero) digits is 95256000, while the sum is 69.

The spelling of 55389115710987 in words is "fifty-five trillion, three hundred eighty-nine billion, one hundred fifteen million, seven hundred ten thousand, nine hundred eighty-seven".