355244305426561 has 4 divisors (see below), whose sum is σ = 355793369268672. Its totient is φ = 354695241584452.

The previous prime is 355244305426477. The next prime is 355244305426607. The reversal of 355244305426561 is 165624503442553.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 355244305426561 - 2¹³ = 355244305418369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (355244302426561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274531920085 + ... + 274531921378.

It is an arithmetic number, because the mean of its divisors is an integer number (88948342317168).

Almost surely, 2^{355244305426561} is an apocalyptic number.

It is an amenable number.

355244305426561 is a deficient number, since it is larger than the sum of its proper divisors (549063842111).

355244305426561 is an equidigital number, since it uses as much as digits as its factorization.

355244305426561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549063842110.

The product of its (nonzero) digits is 51840000, while the sum is 55.

The spelling of 355244305426561 in words is "three hundred fifty-five trillion, two hundred forty-four billion, three hundred five million, four hundred twenty-six thousand, five hundred sixty-one".