55668288749 has 2 divisors, whose sum is σ = 55668288750. Its totient is φ = 55668288748.

The previous prime is 55668288707. The next prime is 55668288857. The reversal of 55668288749 is 94788286655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50371069225 + 5297219524 = 224435^2 + 72782^2 .

It is a cyclic number.

It is not a de Polignac number, because 55668288749 - 2²⁰ = 55667240173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55668288449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27834144374 + 27834144375.

It is an arithmetic number, because the mean of its divisors is an integer number (27834144375).

Almost surely, 2^55668288749 is an apocalyptic number.

It is an amenable number.

55668288749 is a deficient number, since it is larger than the sum of its proper divisors (1).

55668288749 is an equidigital number, since it uses as much as digits as its factorization.

55668288749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 232243200, while the sum is 68.

The spelling of 55668288749 in words is "fifty-five billion, six hundred sixty-eight million, two hundred eighty-eight thousand, seven hundred forty-nine".