257562551161 has 8 divisors (see below), whose sum is σ = 263594550240. Its totient is φ = 251600286432.

The previous prime is 257562551131. The next prime is 257562551167. The reversal of 257562551161 is 161155265752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257562551161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257562551167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17426115 + ... + 17440888.

It is an arithmetic number, because the mean of its divisors is an integer number (32949318780).

Almost surely, 2^257562551161 is an apocalyptic number.

It is an amenable number.

257562551161 is a deficient number, since it is larger than the sum of its proper divisors (6031999079).

257562551161 is an equidigital number, since it uses as much as digits as its factorization.

257562551161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34867175.

The product of its digits is 630000, while the sum is 46.

The spelling of 257562551161 in words is "two hundred fifty-seven billion, five hundred sixty-two million, five hundred fifty-one thousand, one hundred sixty-one".