55439396748289 has 4 divisors (see below), whose sum is σ = 55439425339056. Its totient is φ = 55439368157524.

The previous prime is 55439396748287. The next prime is 55439396748301. The reversal of 55439396748289 is 98284769393455.

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 55439396748289 - 2¹ = 55439396748287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55439396748287) 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, 11157139 + ... + 15341464.

It is an arithmetic number, because the mean of its divisors is an integer number (13859856334764).

Almost surely, 2^{55439396748289} is an apocalyptic number.

It is an amenable number.

55439396748289 is a deficient number, since it is larger than the sum of its proper divisors (28590767).

55439396748289 is a wasteful number, since it uses less digits than its factorization.

55439396748289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28590766.

The product of its digits is 14108774400, while the sum is 82.

The spelling of 55439396748289 in words is "fifty-five trillion, four hundred thirty-nine billion, three hundred ninety-six million, seven hundred forty-eight thousand, two hundred eighty-nine".