55747786823 has 2 divisors, whose sum is σ = 55747786824. Its totient is φ = 55747786822.

The previous prime is 55747786813. The next prime is 55747786841. The reversal of 55747786823 is 32868774755.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55747786823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55747786813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27873893411 + 27873893412.

It is an arithmetic number, because the mean of its divisors is an integer number (27873893412).

Almost surely, 2^55747786823 is an apocalyptic number.

55747786823 is a deficient number, since it is larger than the sum of its proper divisors (1).

55747786823 is an equidigital number, since it uses as much as digits as its factorization.

55747786823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79027200, while the sum is 62.

The spelling of 55747786823 in words is "fifty-five billion, seven hundred forty-seven million, seven hundred eighty-six thousand, eight hundred twenty-three".