256415343423 has 8 divisors (see below), whose sum is σ = 346570510128. Its totient is φ = 168601869504.

The previous prime is 256415343367. The next prime is 256415343461. The reversal of 256415343423 is 324343514652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256415343423 - 2⁸ = 256415343167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256415343473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585422940 + ... + 585423377.

It is an arithmetic number, because the mean of its divisors is an integer number (43321313766).

Almost surely, 2^256415343423 is an apocalyptic number.

256415343423 is a deficient number, since it is larger than the sum of its proper divisors (90155166705).

256415343423 is a wasteful number, since it uses less digits than its factorization.

256415343423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170846393.

The product of its digits is 1036800, while the sum is 42.

The spelling of 256415343423 in words is "two hundred fifty-six billion, four hundred fifteen million, three hundred forty-three thousand, four hundred twenty-three".