656253011273 has 2 divisors, whose sum is σ = 656253011274. Its totient is φ = 656253011272.

The previous prime is 656253011243. The next prime is 656253011347. The reversal of 656253011273 is 372110352656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 641195758009 + 15057253264 = 800747^2 + 122708^2 .

It is a cyclic number.

It is not a de Polignac number, because 656253011273 - 2¹² = 656253007177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 656253011273.

It is not a weakly prime, because it can be changed into another prime (656253011243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328126505636 + 328126505637.

It is an arithmetic number, because the mean of its divisors is an integer number (328126505637).

Almost surely, 2^656253011273 is an apocalyptic number.

It is an amenable number.

656253011273 is a deficient number, since it is larger than the sum of its proper divisors (1).

656253011273 is an equidigital number, since it uses as much as digits as its factorization.

656253011273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 656253011273 in words is "six hundred fifty-six billion, two hundred fifty-three million, eleven thousand, two hundred seventy-three".