256875543771 has 32 divisors (see below), whose sum is σ = 427049238528. Its totient is φ = 133430795040.

The previous prime is 256875543767. The next prime is 256875543781. The reversal of 256875543771 is 177345578652.

It is not a de Polignac number, because 256875543771 - 2² = 256875543767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256875543781) 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, 3265120 + ... + 3342866.

It is an arithmetic number, because the mean of its divisors is an integer number (13345288704).

Almost surely, 2^256875543771 is an apocalyptic number.

256875543771 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

256875543771 is a deficient number, since it is larger than the sum of its proper divisors (170173694757).

256875543771 is a wasteful number, since it uses less digits than its factorization.

256875543771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92071.

The product of its digits is 49392000, while the sum is 60.

The spelling of 256875543771 in words is "two hundred fifty-six billion, eight hundred seventy-five million, five hundred forty-three thousand, seven hundred seventy-one".