634262267643 has 4 divisors (see below), whose sum is σ = 845683023528. Its totient is φ = 422841511760.

The previous prime is 634262267627. The next prime is 634262267671. The reversal of 634262267643 is 346762262436.

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

It is a cyclic number.

It is not a de Polignac number, because 634262267643 - 2⁴ = 634262267627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (634262267623) 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, 105710377938 + ... + 105710377943.

It is an arithmetic number, because the mean of its divisors is an integer number (211420755882).

Almost surely, 2^634262267643 is an apocalyptic number.

634262267643 is a deficient number, since it is larger than the sum of its proper divisors (211420755885).

634262267643 is a wasteful number, since it uses less digits than its factorization.

634262267643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211420755884.

The product of its digits is 10450944, while the sum is 51.

The spelling of 634262267643 in words is "six hundred thirty-four billion, two hundred sixty-two million, two hundred sixty-seven thousand, six hundred forty-three".