266904253442 has 18 divisors (see below), whose sum is σ = 401798316297. Its totient is φ = 132973204000.

The previous prime is 266904253439. The next prime is 266904253459. The reversal of 266904253442 is 244352409662.

266904253442 is digitally balanced in base 3, 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 2 ways, for example, as 159943205041 + 106961048401 = 399929^2 + 327049^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=365311.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 292978967 + ... + 292979877.

Almost surely, 2^266904253442 is an apocalyptic number.

266904253442 is a deficient number, since it is larger than the sum of its proper divisors (134894062855).

266904253442 is an frugal number, since it uses more digits than its factorization.

266904253442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 266904253442 in words is "two hundred sixty-six billion, nine hundred four million, two hundred fifty-three thousand, four hundred forty-two".