257010082261 has 8 divisors (see below), whose sum is σ = 272132961984. Its totient is φ = 241887718080.

The previous prime is 257010082247. The next prime is 257010082271. The reversal of 257010082261 is 162280010752.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 257010082261 - 2⁹ = 257010081749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257010082271) 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, 1450726 + ... + 1618216.

It is an arithmetic number, because the mean of its divisors is an integer number (34016620248).

Almost surely, 2^257010082261 is an apocalyptic number.

It is an amenable number.

257010082261 is a deficient number, since it is larger than the sum of its proper divisors (15122879723).

257010082261 is a wasteful number, since it uses less digits than its factorization.

257010082261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257771.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 257010082261 in words is "two hundred fifty-seven billion, ten million, eighty-two thousand, two hundred sixty-one".