655550517267623 has 2 divisors, whose sum is σ = 655550517267624. Its totient is φ = 655550517267622.

The previous prime is 655550517267553. The next prime is 655550517267629. The reversal of 655550517267623 is 326762715055556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655550517267623 - 2¹⁴ = 655550517251239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655550517267623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655550517267629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327775258633811 + 327775258633812.

It is an arithmetic number, because the mean of its divisors is an integer number (327775258633812).

Almost surely, 2^{655550517267623} is an apocalyptic number.

655550517267623 is a deficient number, since it is larger than the sum of its proper divisors (1).

655550517267623 is an equidigital number, since it uses as much as digits as its factorization.

655550517267623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900000, while the sum is 65.

The spelling of 655550517267623 in words is "six hundred fifty-five trillion, five hundred fifty billion, five hundred seventeen million, two hundred sixty-seven thousand, six hundred twenty-three".