635074674161 has 4 divisors (see below), whose sum is σ = 641362542324. Its totient is φ = 628786806000.

The previous prime is 635074674151. The next prime is 635074674173. The reversal of 635074674161 is 161476470536.

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

It can be written as a sum of positive squares in 2 ways, for example, as 617865169936 + 17209504225 = 786044^2 + 131185^2 .

It is a cyclic number.

It is not a de Polignac number, because 635074674161 - 2¹⁰ = 635074673137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (635074674151) 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, 3143933930 + ... + 3143934131.

It is an arithmetic number, because the mean of its divisors is an integer number (160340635581).

Almost surely, 2^635074674161 is an apocalyptic number.

It is an amenable number.

635074674161 is a deficient number, since it is larger than the sum of its proper divisors (6287868163).

635074674161 is a wasteful number, since it uses less digits than its factorization.

635074674161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287868162.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 635074674161 in words is "six hundred thirty-five billion, seventy-four million, six hundred seventy-four thousand, one hundred sixty-one".