256240462053 has 8 divisors (see below), whose sum is σ = 341661846208. Its totient is φ = 170823026304.

The previous prime is 256240462013. The next prime is 256240462073. The reversal of 256240462053 is 350264042652.

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

It is not a de Polignac number, because 256240462053 - 2¹⁷ = 256240330981 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 (256240462013) 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, 832201 + ... + 1097742.

It is an arithmetic number, because the mean of its divisors is an integer number (42707730776).

Almost surely, 2^256240462053 is an apocalyptic number.

It is an amenable number.

256240462053 is a deficient number, since it is larger than the sum of its proper divisors (85421384155).

256240462053 is a wasteful number, since it uses less digits than its factorization.

256240462053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974203.

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 256240462053 in words is "two hundred fifty-six billion, two hundred forty million, four hundred sixty-two thousand, fifty-three".