256600006401 has 8 divisors (see below), whose sum is σ = 342145834624. Its totient is φ = 171060424560.

The previous prime is 256600006361. The next prime is 256600006457. The reversal of 256600006401 is 104600006652.

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

It is not a de Polignac number, because 256600006401 - 2¹⁵ = 256599973633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256600006471) 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, 1464886 + ... + 1630671.

It is an arithmetic number, because the mean of its divisors is an integer number (42768229328).

Almost surely, 2^256600006401 is an apocalyptic number.

It is an amenable number.

256600006401 is a deficient number, since it is larger than the sum of its proper divisors (85545828223).

256600006401 is a wasteful number, since it uses less digits than its factorization.

256600006401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123191.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 256600006401 in words is "two hundred fifty-six billion, six hundred million, six thousand, four hundred one".