449861626777 has 2 divisors, whose sum is σ = 449861626778. Its totient is φ = 449861626776.

The previous prime is 449861626751. The next prime is 449861626849. The reversal of 449861626777 is 777626168944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441030138201 + 8831488576 = 664101^2 + 93976^2 .

It is a cyclic number.

It is not a de Polignac number, because 449861626777 - 2¹⁵ = 449861594009 is a prime.

It is a super-3 number, since 3×449861626777³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (449861621777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224930813388 + 224930813389.

It is an arithmetic number, because the mean of its divisors is an integer number (224930813389).

Almost surely, 2^449861626777 is an apocalyptic number.

It is an amenable number.

449861626777 is a deficient number, since it is larger than the sum of its proper divisors (1).

449861626777 is an equidigital number, since it uses as much as digits as its factorization.

449861626777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170698752, while the sum is 67.

The spelling of 449861626777 in words is "four hundred forty-nine billion, eight hundred sixty-one million, six hundred twenty-six thousand, seven hundred seventy-seven".