126644563440562 has 8 divisors (see below), whose sum is σ = 201141365464476. Its totient is φ = 59597441619072.

The previous prime is 126644563440539. The next prime is 126644563440569. The reversal of 126644563440562 is 265044365446621.

It can be written as a sum of positive squares in 2 ways, for example, as 95712156661081 + 30932406779481 = 9783259^2 + 5561691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 126644563440497 and 126644563440506.

It is not an unprimeable number, because it can be changed into a prime (126644563440569) 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, 1862420050563 + ... + 1862420050630.

Almost surely, 2^{126644563440562} is an apocalyptic number.

126644563440562 is a deficient number, since it is larger than the sum of its proper divisors (74496802023914).

126644563440562 is a wasteful number, since it uses less digits than its factorization.

126644563440562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724840101212.

The product of its (nonzero) digits is 99532800, while the sum is 58.

The spelling of 126644563440562 in words is "one hundred twenty-six trillion, six hundred forty-four billion, five hundred sixty-three million, four hundred forty thousand, five hundred sixty-two".