256735046725147 has 4 divisors (see below), whose sum is σ = 256735189310400. Its totient is φ = 256734904139896.

The previous prime is 256735046725121. The next prime is 256735046725181. The reversal of 256735046725147 is 741527640537652.

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

It is a cyclic number.

It is not a de Polignac number, because 256735046725147 - 2⁷ = 256735046725019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256735046735147) 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, 68556772 + ... + 72204577.

It is an arithmetic number, because the mean of its divisors is an integer number (64183797327600).

Almost surely, 2^{256735046725147} is an apocalyptic number.

256735046725147 is a deficient number, since it is larger than the sum of its proper divisors (142585253).

256735046725147 is a wasteful number, since it uses less digits than its factorization.

256735046725147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142585252.

The product of its (nonzero) digits is 296352000, while the sum is 64.

The spelling of 256735046725147 in words is "two hundred fifty-six trillion, seven hundred thirty-five billion, forty-six million, seven hundred twenty-five thousand, one hundred forty-seven".