256423234001 has 16 divisors (see below), whose sum is σ = 284838978816. Its totient is φ = 230803870000.

The previous prime is 256423233947. The next prime is 256423234009. The reversal of 256423234001 is 100432324652.

It is a de Polignac number, because none of the positive numbers 2^k-256423234001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256423234009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819305 + ... + 1088166.

It is an arithmetic number, because the mean of its divisors is an integer number (17802436176).

Almost surely, 2^256423234001 is an apocalyptic number.

It is an amenable number.

256423234001 is a deficient number, since it is larger than the sum of its proper divisors (28415744815).

256423234001 is a wasteful number, since it uses less digits than its factorization.

256423234001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907605 (or 1907583 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 256423234001 its reverse (100432324652), we get a palindrome (356855558653).

The spelling of 256423234001 in words is "two hundred fifty-six billion, four hundred twenty-three million, two hundred thirty-four thousand, one".