256332561467 has 4 divisors (see below), whose sum is σ = 257396182296. Its totient is φ = 255268940640.

The previous prime is 256332561461. The next prime is 256332561469. The reversal of 256332561467 is 764165233652.

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 256332561467 - 2⁴ = 256332561451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256332561461) 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, 531810053 + ... + 531810534.

It is an arithmetic number, because the mean of its divisors is an integer number (64349045574).

Almost surely, 2^256332561467 is an apocalyptic number.

256332561467 is a deficient number, since it is larger than the sum of its proper divisors (1063620829).

256332561467 is a wasteful number, since it uses less digits than its factorization.

256332561467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063620828.

The product of its digits is 5443200, while the sum is 50.

The spelling of 256332561467 in words is "two hundred fifty-six billion, three hundred thirty-two million, five hundred sixty-one thousand, four hundred sixty-seven".