356440044661 has 2 divisors, whose sum is σ = 356440044662. Its totient is φ = 356440044660.

The previous prime is 356440044643. The next prime is 356440044691. The reversal of 356440044661 is 166440044653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327992162436 + 28447882225 = 572706^2 + 168665^2 .

It is a cyclic number.

It is not a de Polignac number, because 356440044661 - 2¹¹ = 356440042613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (356440044691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178220022330 + 178220022331.

It is an arithmetic number, because the mean of its divisors is an integer number (178220022331).

Almost surely, 2^356440044661 is an apocalyptic number.

It is an amenable number.

356440044661 is a deficient number, since it is larger than the sum of its proper divisors (1).

356440044661 is an equidigital number, since it uses as much as digits as its factorization.

356440044661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 356440044661 in words is "three hundred fifty-six billion, four hundred forty million, forty-four thousand, six hundred sixty-one".