262428621668 has 12 divisors (see below), whose sum is σ = 459266318700. Its totient is φ = 131209673472.

The previous prime is 262428621667. The next prime is 262428621683. The reversal of 262428621668 is 866126824262.

It can be written as a sum of positive squares in 2 ways, for example, as 112955143744 + 149473477924 = 336088^2 + 386618^2 .

It is not an unprimeable number, because it can be changed into a prime (262428621667) 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, 1030421 + ... + 1259612.

It is an arithmetic number, because the mean of its divisors is an integer number (38272193225).

Almost surely, 2^262428621668 is an apocalyptic number.

It is an amenable number.

262428621668 is a deficient number, since it is larger than the sum of its proper divisors (196837697032).

262428621668 is a wasteful number, since it uses less digits than its factorization.

262428621668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318686 (or 2318684 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 53.

The spelling of 262428621668 in words is "two hundred sixty-two billion, four hundred twenty-eight million, six hundred twenty-one thousand, six hundred sixty-eight".