55904718697 has 2 divisors, whose sum is σ = 55904718698. Its totient is φ = 55904718696.

The previous prime is 55904718659. The next prime is 55904718721. The reversal of 55904718697 is 79681740955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50095840041 + 5808878656 = 223821^2 + 76216^2 .

It is a cyclic number.

It is not a de Polignac number, because 55904718697 - 2³⁵ = 21544980329 is a prime.

It is not a weakly prime, because it can be changed into another prime (55904718797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27952359348 + 27952359349.

It is an arithmetic number, because the mean of its divisors is an integer number (27952359349).

Almost surely, 2^55904718697 is an apocalyptic number.

It is an amenable number.

55904718697 is a deficient number, since it is larger than the sum of its proper divisors (1).

55904718697 is an equidigital number, since it uses as much as digits as its factorization.

55904718697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 61.

The spelling of 55904718697 in words is "fifty-five billion, nine hundred four million, seven hundred eighteen thousand, six hundred ninety-seven".