55648279439 has 2 divisors, whose sum is σ = 55648279440. Its totient is φ = 55648279438.

The previous prime is 55648279429. The next prime is 55648279457. The reversal of 55648279439 is 93497284655.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55648279439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55648279429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27824139719 + 27824139720.

It is an arithmetic number, because the mean of its divisors is an integer number (27824139720).

Almost surely, 2^55648279439 is an apocalyptic number.

55648279439 is a deficient number, since it is larger than the sum of its proper divisors (1).

55648279439 is an equidigital number, since it uses as much as digits as its factorization.

55648279439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65318400, while the sum is 62.

The spelling of 55648279439 in words is "fifty-five billion, six hundred forty-eight million, two hundred seventy-nine thousand, four hundred thirty-nine".