256355202153 has 32 divisors (see below), whose sum is σ = 354620620800. Its totient is φ = 164531497536.

The previous prime is 256355202151. The next prime is 256355202203. The reversal of 256355202153 is 351202553652.

It is a happy number.

It is not a de Polignac number, because 256355202153 - 2¹ = 256355202151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256355202151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77237028 + ... + 77240346.

It is an arithmetic number, because the mean of its divisors is an integer number (11081894400).

Almost surely, 2^256355202153 is an apocalyptic number.

It is an amenable number.

256355202153 is a deficient number, since it is larger than the sum of its proper divisors (98265418647).

256355202153 is a wasteful number, since it uses less digits than its factorization.

256355202153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5661.

The product of its (nonzero) digits is 270000, while the sum is 39.

The spelling of 256355202153 in words is "two hundred fifty-six billion, three hundred fifty-five million, two hundred two thousand, one hundred fifty-three".