266444400042 has 12 divisors (see below), whose sum is σ = 577296200130. Its totient is φ = 88814800008.

The previous prime is 266444400031. The next prime is 266444400091. The reversal of 266444400042 is 240004444662.

266444400042 is a `hidden beast` number, since 2 + 6 + 644 + 4 + 4 + 0 + 0 + 0 + 4 + 2 = 666.

266444400042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141037051401 + 125407348641 = 375549^2 + 354129^2 .

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 7401233317 + ... + 7401233352.

Almost surely, 2^266444400042 is an apocalyptic number.

266444400042 is an abundant number, since it is smaller than the sum of its proper divisors (310851800088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266444400042 is a wasteful number, since it uses less digits than its factorization.

266444400042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14802466677 (or 14802466674 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

The spelling of 266444400042 in words is "two hundred sixty-six billion, four hundred forty-four million, four hundred thousand, forty-two".