266406064426 has 4 divisors (see below), whose sum is σ = 399609096642. Its totient is φ = 133203032212.

The previous prime is 266406064387. The next prime is 266406064429. The reversal of 266406064426 is 624460604662.

It is a happy number.

266406064426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 266374693225 + 31371201 = 516115^2 + 5601^2 .

It is not an unprimeable number, because it can be changed into a prime (266406064429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66601516105 + ... + 66601516108.

Almost surely, 2^266406064426 is an apocalyptic number.

266406064426 is a deficient number, since it is larger than the sum of its proper divisors (133203032216).

266406064426 is a wasteful number, since it uses less digits than its factorization.

266406064426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133203032215.

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 266406064426 in words is "two hundred sixty-six billion, four hundred six million, sixty-four thousand, four hundred twenty-six".